willcool4ever • C字符串操作：字符串反转

#include "stdio.h"
#include "stdlib.h"
#include "string.h"

void main()
{
    char c;
    //错误写法，指针为常量char *str = "abcdefg"
    char str[] = "abcdefg";
    int len = strlen(str);
    char *p1 = str;
    char *p2 = str + len -1;

    while(p1<p2)
    {
        c = *p1;
        *p1 = *p2;
        *p2 = c;
        p1 ++;
        p2 --;
    }

    printf("str:%s\n", str);

    system("pause");
}