print month

#include<stdio.h>
#include<stdlib.h>

void print_month(int start, int nb_days){
    int i,j,a,n,m;
    printf("  su  mo  tu  we  th  fr  sa  \n");
    a=1;
    for(i=0;i<=5;i++){
        for(j=0;j<7;j++){
            if(i==0 && j<start) printf("    ");
            else{
                if(a<=nb_days) printf("%4d",a);
                a++;
            }
        }
        printf("\n");
    }
}

int main(int argc, char *argv[]){
    int nb_days = 31; // todo: make function returing nb_days knowing the month and the year
    int starting_day = 4; // todo: think a litle harder to make a function that returns the starting day
                        // it shouldn't be impossible , I've done it before
    print_month(starting_day,nb_days);
    return 0;
}