输入五个字符串，输出最长的字符串

#include <stdio.h>
#include <string.h >
 
int main()
{
    int i = 0;
    char s[80] = {""}, max[80] = {""};
 
    printf("输入五个字符串:
");
    scanf("%s",s);
    strcpy(max,s);
 
    for(i=1; i<5; i++)
    {
	scanf("%s",s);
	if( strcmp(max,s)<0 )
	    strcpy(max,s);
    }
    printf("最大的字符串是:%s 
",max);
    return 0;
}