#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(int argc, char *argv[])
{
   int a,b,sum=0;
   srand(time(NULL));
   a=rand()%6+1;
   b=rand()%6+1;
   sum=a+b;
   if(sum==7||sum==11)
   printf("  you win\n");
   else
   printf(" you lose\n");
   printf("%d %d %d \t",a,b,sum);
   return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(int argc, char *argv[])
{
   int a,b;
   srand(time(NULL));
   a=rand()%6+1;
   b=rand()%6+1;
   char *saizi();
   return 0;
}
 char *saizi(int a, int b)
{   int sum;
    int saizi_a;
    int saizi_b;
    char result[100];
   
    saizi_a = a;
    saizi_b = b;
    sum = saizi_a + saizi_b;
    if (sum == 7 || sum == 11)
    {
        result = "you win";
    }
    else
    {
        result = "you lose";
    }

    return (result);
}这样怎么改

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
void shaizi(int c)
 {
     int a,b;
    srand(time(NULL));
    a=rand()%6+1;
    b=rand()%6+1;
    c=a+b;
    if(c==7||c==11)
    printf("you win");
    else
    printf("you lose");
 }
 int main(int argc, char *argv[])
 
{   
    void saizi();
    void saizi(int c);
    return 0;
}这个程序能跑，为什么没数据输出？？