sprintf格式化复制函数小程序

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void)
{
    char *p = "%host=3&ip=192.168.1.1&test";
    char buff[128];
    char *match;

    match = strstr(buff,"dir=");
    if(match==0) printf("no match\n");
    else {
        printf("match:\n");
        printf("%s\n",match);
        sscanf(match,"dir=%s",buff);//遇到换行符结束，而并非直到字符串结尾
        sprintf(buff1,"->%s<-",match);//只是复制而已，并加上需要格式化的修饰字符
    }
    printf("buff:\n");
    printf("%s\n",buff);
    printf("buff1:\n");
    printf("%s\n",buff1);

    return 0;

}

运行结果：