心里魔术

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void main() {
    int i;
    char c,gu;
    srand((unsigned)time(NULL));
    c=6;
    gu=rand()%6+1;
    for(i=1;i<=100;i++){
        c=rand()%31+1;
        if(c>=7&&c<=13){
            c=17;
        }
        if(i%9==0){
            printf("%d. %c\t",i,gu);
        }else{
            printf("%d. %c\t",i,c);
        }
        if(i%5==0){
            printf("\n");
        }
    }
    getchar();
    printf("the icon you guess is :\n");
    for(i=1;i<=10;i++){
        printf("%c ",gu);
    }
    printf("\n");
    return;
}