#include <stdio.h>
#define MAX 1000
int binsearch(int x,char v[],int n);
main()
{
    char v[MAX];
    int x,n;
    scanf("%s%d%s",&x,&n,&v[MAX]);
    binsearch(x,v[MAX],n);
    printf("%d",binsearch(x,v[MAX],n));
}
int binsearch(int x,char v[],int n)
{
    int low,high,mid;
    low = 0;
    high = n-1;
    mid = (low+high)/2;
    while (low<=high&&x!=mid)
    {
        if (x<mid)
            high = mid;
        else
            low = mid;
    }
    if (x!=mid)
        return -1;
    else
        return mid;
}

编译 0error4warning
:\c\3-1.c(9) : warning C4047: 'function' : 'char *' differs in levels of indirection from 'char '
E:\c\3-1.c(9) : warning C4024: 'binsearch' : different types for formal and actual parameter 2
E:\c\3-1.c(10) : warning C4047: 'function' : 'char *' differs in levels of indirection from 'char '
E:\c\3-1.c(10) : warning C4024: 'binsearch' : different types for formal and actual parameter 2
无法链接

我觉得错应该都在主函数。。