C language example - print calendar

Write a program to display a single-month calendar.The user specifies the number of days in the month and the day of the week that the month starts.

# include int main(){int day;int i, j;int week;printf("Enter number of days in month: ");scanf("%d", &day);printf("Enter starting day of the week (1 = Sun, 7 = Sat): ");scanf("%d", &week);for(j = 1; j < week; j++){printf(" ");}//Type the space before the start of the calendar, a space is 4 bytesfor(i = 1; i <= day; i++){printf("%4d", i);if( (i + week -1) % 7 == 0){printf("\n");}// change line every 7 days}printf("\n");return 0;}