Calendar In C Programming With Source Code
The Calendar In C Programming is develop in C programming language, and this Calendar Project In C helps in finding out the date and day you want to know about. Also, it comes with some extra features.
A Calendar Application In C provide the data starting from the late 1600’s. You can also directly get the day result by submitting the values. You can also add notes. The note field is 50 character maximum.
This Calendar Application Project In C also includes a downloadable Calendar In C source code for free, just find the downloadable source code below and click to start downloading.
Watch the video here to see the full running Calendar In C Programming with Source Code.
To start creating a Calendar In C Programming, make sure that you have code blocks or any platform of c language installed in your computer.
Steps on how to create a Calendar In C Programming
Calendar In C Programming With Source Code
- Step 1: Create a new project.
First open the code blocks IDE and click “create a new project“.
- Step 2: Choose console application.
Second click the “console application” and after that click “next“.
- Step 3: Choose C language.
Third choose “C language” and click “next“.
- Step 4: Name Your Project.
Fourth name the project you’ve created and click “next” after that click “finish“.
- Step 5: The actual code.
You are free to copy the given source code below or download the downloadable source code given.
The Code Given Below Is For Declaring Variables
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struct Date{ int dd; int mm; int yy; }; struct Date date; struct Remainder{ int dd; int mm; char note[50]; }; struct Remainder R; COORD xy = {0, 0}; |
The code given which is declaring the variable to be call.
The Code Given Below Is For The Leap Year Module
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int check_leapYear(int year){ //checks whether the year passed is leap year or not if(year % 400 == 0 || (year % 100!=0 && year % 4 ==0)) return 1; return 0; } |
In this module which is checking the leap year.
The Code Given Below Is For The Increase Month Module
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void increase_month(int *mm, int *yy){ //increase the month by one ++*mm; if(*mm > 12){ ++*yy; *mm = *mm - 12; } } |
In this module which is the module for increasing the month up to 12.
The Code Given Below Is For The Decrease Month Module
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void decrease_month(int *mm, int *yy){ //decrease the month by one --*mm; if(*mm < 1){ --*yy; if(*yy<1600){ printf("No record available"); return; } *mm = *mm + 12; } } |
In this module which is the decrease module.
The Code Given Below Is For Number of Days Module
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int getNumberOfDays(int month,int year){ //returns the number of days in given month switch(month){ //and year case 1 : return(31); case 2 : if(check_leapYear(year)==1) return(29); else return(28); case 3 : return(31); case 4 : return(30); case 5 : return(31); case 6 : return(30); case 7 : return(31); case 8 : return(31); case 9 : return(30); case 10: return(31); case 11: return(30); case 12: return(31); default: return(-1); } } |
In this module which is getting the number of days.
The Code Given Below Is For The Day Name
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char *getName(int day){ //returns the name of the day switch(day){ case 0 :return("Sunday"); case 1 :return("Monday"); case 2 :return("Tuesday"); case 3 :return("Wednesday"); case 4 :return("Thursday"); case 5 :return("Friday"); case 6 :return("Saturday"); default:return("Error in getName() module.Invalid argument passed"); } } |
In this module which is getting the name of each day.
The Code Given Below Is For The Print Date Module
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void print_date(int mm, int yy){ //prints the name of month and year printf("---------------------------\n"); gotoxy(25,6); switch(mm){ case 1: printf("January"); break; case 2: printf("February"); break; case 3: printf("March"); break; case 4: printf("April"); break; case 5: printf("May"); break; case 6: printf("June"); break; case 7: printf("July"); break; case 8: printf("August"); break; case 9: printf("September"); break; case 10: printf("October"); break; case 11: printf("November"); break; case 12: printf("December"); break; } printf(" , %d", yy); gotoxy(20,7); printf("---------------------------"); } |
In this module which is the module to print the date.
The Code Given Below Is For The Each Number of Day Module
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int getDayNumber(int day,int mon,int year){ //retuns the day number int res = 0, t1, t2, y = year; year = year - 1600; while(year >= 100){ res = res + 5; year = year - 100; } res = (res % 7); t1 = ((year - 1) / 4); t2 = (year-1)-t1; t1 = (t1*2)+t2; t1 = (t1%7); res = res + t1; res = res%7; t2 = 0; for(t1 = 1;t1 < mon; t1++){ t2 += getNumberOfDays(t1,y); } t2 = t2 + day; t2 = t2 % 7; res = res + t2; res = res % 7; if(y > 2000) res = res + 1; res = res % 7; return res; } |
In this module which is getting each number of day.
The Code Given Below Is For The Print Month Module
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void printMonth(int mon,int year,int x,int y){ //prints the month with all days int nod, day, cnt, d = 1, x1 = x, y1 = y, isNote = 0; if(!(mon>=1 && mon<=12)){ printf("INVALID MONTH"); getch(); return; } if(!(year>=1600)){ printf("INVALID YEAR"); getch(); return; } gotoxy(20,y); print_date(mon,year); y += 3; gotoxy(x,y); printf("S M T W T F S "); y++; nod = getNumberOfDays(mon,year); day = getDayNumber(d,mon,year); switch(day){ //locates the starting day in calender case 0 : x=x; cnt=1; break; case 1 : x=x+4; cnt=2; break; case 2 : x=x+8; cnt=3; break; case 3 : x=x+12; cnt=4; break; case 4 : x=x+16; cnt=5; break; case 5 : x=x+20; cnt=6; break; case 6 : x=x+24; cnt=7; break; default : printf("INVALID DATA FROM THE getOddNumber()MODULE"); return; } gotoxy(x,y); if(cnt == 1){ SetColor(12); } if(checkNote(d,mon)==1){ SetColorAndBackground(15,12); } printf("%02d",d); SetColorAndBackground(15,1); for(d=2;d<=nod;d++){ if(cnt%7==0){ y++; cnt=0; x=x1-4; } x = x+4; cnt++; gotoxy(x,y); if(cnt==1){ SetColor(12); }else{ ClearColor(); } if(checkNote(d,mon)==1){ SetColorAndBackground(15,12); } printf("%02d",d); SetColorAndBackground(15,1); } gotoxy(8, y+2); SetColor(14); printf("Press 'n' to Next, Press 'p' to Previous and 'q' to Quit"); gotoxy(8,y+3); printf("Red Background indicates the NOTE, Press 's' to see note: "); ClearColor(); } |
In this module which is to display and print all the months.
The Code Given Below Is For The Add Note Module
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void AddNote(){ FILE *fp; fp = fopen("note.dat","ab+"); system("cls"); gotoxy(5,7); printf("Enter the date(DD/MM): "); scanf("%d%d",&R.dd, &R.mm); gotoxy(5,8); printf("Enter the Note(50 character max): "); fflush(stdin); scanf("%[^\n]",R.note); if(fwrite(&R,sizeof(R),1,fp)){ gotoxy(5,12); puts("Note is saved sucessfully"); fclose(fp); }else{ gotoxy(5,12); SetColor(12); puts("\aFail to save!!\a"); ClearColor(); } gotoxy(5,15); printf("Press any key............"); getch(); fclose(fp); } |
In this module which is adding note.
The Code Given Below Is For The Showing Note Module
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void showNote(int mm){ FILE *fp; int i = 0, isFound = 0; system("cls"); fp = fopen("note.dat","rb"); if(fp == NULL){ printf("Error in opening the file"); } while(fread(&R,sizeof(R),1,fp) == 1){ if(R.mm == mm){ gotoxy(10,5+i); printf("Note %d Day = %d: %s", i+1, R.dd, R.note); isFound = 1; i++; } } if(isFound == 0){ gotoxy(10,5); printf("This Month contains no note"); } gotoxy(10,7+i); printf("Press any key to back......."); getch(); } |
In this module which is showing or displaying the notes.
The Code Given Below Is For The Main Module
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int main(){ ClearConsoleToColors(15, 5); SetConsoleTitle("Calender Project - ITSOURCECODE.COM"); int choice; char ch = 'a'; while(1){ system("cls"); printf("1. Find Out the Day\n"); printf("2. Print all the day of month\n"); printf("3. Add Note\n"); printf("4. EXIT\n"); printf("ENTER YOUR CHOICE : "); scanf("%d",&choice); system("cls"); switch(choice){ case 1: printf("Enter date (DD MM YYYY) : "); scanf("%d %d %d",&date.dd,&date.mm,&date.yy); printf("Day is : %s",getDay(date.dd,date.mm,date.yy)); printf("\nPress any key to continue......"); getch(); break; case 2 : printf("Enter month and year (MM YYYY) : "); scanf("%d %d",&date.mm,&date.yy); system("cls"); while(ch!='q'){ printMonth(date.mm,date.yy,20,5); ch = getch(); if(ch == 'n'){ increase_month(&date.mm,&date.yy); system("cls"); printMonth(date.mm,date.yy,20,5); }else if(ch == 'p'){ decrease_month(&date.mm,&date.yy); system("cls"); printMonth(date.mm,date.yy,20,5); }else if(ch == 's'){ showNote(date.mm); system("cls"); } } break; case 3: AddNote(); break; case 4 : exit(0); } } return 0; } |
In this module which is the main module of the system.
Complete Source Code
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#include<stdio.h> #include<conio.h> #include<windows.h> /********************************************** ***********************************************/ struct Date{ int dd; int mm; int yy; }; struct Date date; struct Remainder{ int dd; int mm; char note[50]; }; struct Remainder R; COORD xy = {0, 0}; void gotoxy (int x, int y) { xy.X = x; xy.Y = y; // X and Y coordinates SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), xy); } //This will set the forground color for printing in a console window. void SetColor(int ForgC) { WORD wColor; //We will need this handle to get the current background attribute HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); CONSOLE_SCREEN_BUFFER_INFO csbi; //We use csbi for the wAttributes word. if(GetConsoleScreenBufferInfo(hStdOut, &csbi)) { //Mask out all but the background attribute, and add in the forgournd color wColor = (csbi.wAttributes & 0xF0) + (ForgC & 0x0F); SetConsoleTextAttribute(hStdOut, wColor); } return; } void ClearColor(){ SetColor(15); } void ClearConsoleToColors(int ForgC, int BackC) { WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F); //Get the handle to the current output buffer... HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); //This is used to reset the carat/cursor to the top left. COORD coord = {0, 0}; //A return value... indicating how many chars were written // not used but we need to capture this since it will be // written anyway (passing NULL causes an access violation). DWORD count; //This is a structure containing all of the console info // it is used here to find the size of the console. CONSOLE_SCREEN_BUFFER_INFO csbi; //Here we will set the current color SetConsoleTextAttribute(hStdOut, wColor); if(GetConsoleScreenBufferInfo(hStdOut, &csbi)) { //This fills the buffer with a given character (in this case 32=space). FillConsoleOutputCharacter(hStdOut, (TCHAR) 32, csbi.dwSize.X * csbi.dwSize.Y, coord, &count); FillConsoleOutputAttribute(hStdOut, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, coord, &count ); //This will set our cursor position for the next print statement. SetConsoleCursorPosition(hStdOut, coord); } return; } void SetColorAndBackground(int ForgC, int BackC) { WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F);; SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), wColor); return; } int check_leapYear(int year){ //checks whether the year passed is leap year or not if(year % 400 == 0 || (year % 100!=0 && year % 4 ==0)) return 1; return 0; } void increase_month(int *mm, int *yy){ //increase the month by one ++*mm; if(*mm > 12){ ++*yy; *mm = *mm - 12; } } void decrease_month(int *mm, int *yy){ //decrease the month by one --*mm; if(*mm < 1){ --*yy; if(*yy<1600){ printf("No record available"); return; } *mm = *mm + 12; } } int getNumberOfDays(int month,int year){ //returns the number of days in given month switch(month){ //and year case 1 : return(31); case 2 : if(check_leapYear(year)==1) return(29); else return(28); case 3 : return(31); case 4 : return(30); case 5 : return(31); case 6 : return(30); case 7 : return(31); case 8 : return(31); case 9 : return(30); case 10: return(31); case 11: return(30); case 12: return(31); default: return(-1); } } char *getName(int day){ //returns the name of the day switch(day){ case 0 :return("Sunday"); case 1 :return("Monday"); case 2 :return("Tuesday"); case 3 :return("Wednesday"); case 4 :return("Thursday"); case 5 :return("Friday"); case 6 :return("Saturday"); default:return("Error in getName() module.Invalid argument passed"); } } void print_date(int mm, int yy){ //prints the name of month and year printf("---------------------------\n"); gotoxy(25,6); switch(mm){ case 1: printf("January"); break; case 2: printf("February"); break; case 3: printf("March"); break; case 4: printf("April"); break; case 5: printf("May"); break; case 6: printf("June"); break; case 7: printf("July"); break; case 8: printf("August"); break; case 9: printf("September"); break; case 10: printf("October"); break; case 11: printf("November"); break; case 12: printf("December"); break; } printf(" , %d", yy); gotoxy(20,7); printf("---------------------------"); } int getDayNumber(int day,int mon,int year){ //retuns the day number int res = 0, t1, t2, y = year; year = year - 1600; while(year >= 100){ res = res + 5; year = year - 100; } res = (res % 7); t1 = ((year - 1) / 4); t2 = (year-1)-t1; t1 = (t1*2)+t2; t1 = (t1%7); res = res + t1; res = res%7; t2 = 0; for(t1 = 1;t1 < mon; t1++){ t2 += getNumberOfDays(t1,y); } t2 = t2 + day; t2 = t2 % 7; res = res + t2; res = res % 7; if(y > 2000) res = res + 1; res = res % 7; return res; } char *getDay(int dd,int mm,int yy){ int day; if(!(mm>=1 && mm<=12)){ return("Invalid month value"); } if(!(dd>=1 && dd<=getNumberOfDays(mm,yy))){ return("Invalid date"); } if(yy>=1600){ day = getDayNumber(dd,mm,yy); day = day%7; return(getName(day)); }else{ return("Please give year more than 1600"); } } int checkNote(int dd, int mm){ FILE *fp; fp = fopen("note.dat","rb"); if(fp == NULL){ printf("Error in Opening the file"); } while(fread(&R,sizeof(R),1,fp) == 1){ if(R.dd == dd && R.mm == mm){ fclose(fp); return 1; } } fclose(fp); return 0; } void printMonth(int mon,int year,int x,int y){ //prints the month with all days int nod, day, cnt, d = 1, x1 = x, y1 = y, isNote = 0; if(!(mon>=1 && mon<=12)){ printf("INVALID MONTH"); getch(); return; } if(!(year>=1600)){ printf("INVALID YEAR"); getch(); return; } gotoxy(20,y); print_date(mon,year); y += 3; gotoxy(x,y); printf("S M T W T F S "); y++; nod = getNumberOfDays(mon,year); day = getDayNumber(d,mon,year); switch(day){ //locates the starting day in calender case 0 : x=x; cnt=1; break; case 1 : x=x+4; cnt=2; break; case 2 : x=x+8; cnt=3; break; case 3 : x=x+12; cnt=4; break; case 4 : x=x+16; cnt=5; break; case 5 : x=x+20; cnt=6; break; case 6 : x=x+24; cnt=7; break; default : printf("INVALID DATA FROM THE getOddNumber()MODULE"); return; } gotoxy(x,y); if(cnt == 1){ SetColor(12); } if(checkNote(d,mon)==1){ SetColorAndBackground(15,12); } printf("%02d",d); SetColorAndBackground(15,1); for(d=2;d<=nod;d++){ if(cnt%7==0){ y++; cnt=0; x=x1-4; } x = x+4; cnt++; gotoxy(x,y); if(cnt==1){ SetColor(12); }else{ ClearColor(); } if(checkNote(d,mon)==1){ SetColorAndBackground(15,12); } printf("%02d",d); SetColorAndBackground(15,1); } gotoxy(8, y+2); SetColor(14); printf("Press 'n' to Next, Press 'p' to Previous and 'q' to Quit"); gotoxy(8,y+3); printf("Red Background indicates the NOTE, Press 's' to see note: "); ClearColor(); } void AddNote(){ FILE *fp; fp = fopen("note.dat","ab+"); system("cls"); gotoxy(5,7); printf("Enter the date(DD/MM): "); scanf("%d%d",&R.dd, &R.mm); gotoxy(5,8); printf("Enter the Note(50 character max): "); fflush(stdin); scanf("%[^\n]",R.note); if(fwrite(&R,sizeof(R),1,fp)){ gotoxy(5,12); puts("Note is saved sucessfully"); fclose(fp); }else{ gotoxy(5,12); SetColor(12); puts("\aFail to save!!\a"); ClearColor(); } gotoxy(5,15); printf("Press any key............"); getch(); fclose(fp); } void showNote(int mm){ FILE *fp; int i = 0, isFound = 0; system("cls"); fp = fopen("note.dat","rb"); if(fp == NULL){ printf("Error in opening the file"); } while(fread(&R,sizeof(R),1,fp) == 1){ if(R.mm == mm){ gotoxy(10,5+i); printf("Note %d Day = %d: %s", i+1, R.dd, R.note); isFound = 1; i++; } } if(isFound == 0){ gotoxy(10,5); printf("This Month contains no note"); } gotoxy(10,7+i); printf("Press any key to back......."); getch(); } int main(){ ClearConsoleToColors(15, 5); SetConsoleTitle("Calender Project - ITSOURCECODE.COM"); int choice; char ch = 'a'; while(1){ system("cls"); printf("1. Find Out the Day\n"); printf("2. Print all the day of month\n"); printf("3. Add Note\n"); printf("4. EXIT\n"); printf("ENTER YOUR CHOICE : "); scanf("%d",&choice); system("cls"); switch(choice){ case 1: printf("Enter date (DD MM YYYY) : "); scanf("%d %d %d",&date.dd,&date.mm,&date.yy); printf("Day is : %s",getDay(date.dd,date.mm,date.yy)); printf("\nPress any key to continue......"); getch(); break; case 2 : printf("Enter month and year (MM YYYY) : "); scanf("%d %d",&date.mm,&date.yy); system("cls"); while(ch!='q'){ printMonth(date.mm,date.yy,20,5); ch = getch(); if(ch == 'n'){ increase_month(&date.mm,&date.yy); system("cls"); printMonth(date.mm,date.yy,20,5); }else if(ch == 'p'){ decrease_month(&date.mm,&date.yy); system("cls"); printMonth(date.mm,date.yy,20,5); }else if(ch == 's'){ showNote(date.mm); system("cls"); } } break; case 3: AddNote(); break; case 4 : exit(0); } } return 0; } |
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Summary
This System Project is being develop in C programming language, and this simple project can enhance the knowledge of the beginners or the students to develop their skills in programming, also this project is easy to understand the module and their variables.
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