逍遥云's Blog

先前在百度空间里帖了一个函数，很乱也蛮烂的

http://hi.baidu.com/pallove/blog/item/ea3c0b469c4bf0076a63e53e.html

早上使用strstr函数再写了一个，一下感觉清爽多了。

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

char* replace(const char *src, const char *from, const char *to, char *dest)
{
    int idx = 0;
    char *find;
    while(1) {
        if(find = strstr(src, from)) {
            idx = find - src;
            strncat(dest, src, idx);
            strncat(dest, to, strlen(to));
            src += idx + strlen(from);
        }
        else {
            strncat(dest, src, strlen(src));
            break;
        }
    }

    return dest;
}

int main()
{
    char *dest = malloc(1024);
    strcpy(dest, "result:");
    printf("%s\n", replace("hello, abcabctestasdlfklasdjabc ldsafabc", "abc", "123", dest));

    exit(0);
}