>>373
ひょっとしてそれはギャグでやってるのか？マジでやってるならかなり恥ずかしいぞ

** 回答例 **
#include <stdio.h>

char *table[] = {"NULL", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

char *mon(int i){
return table[i];
}

int main(){
int i;

printf("数字を入力:");
scanf("%d",&i);
if(i < 1 || i > 12) i = 0;

printf("%s\n", mon(i));
return 0;
}