strtok测试例程

       字符在第一次调用时strtok()必需给予参数s字符串,往后的调用则将参数s设置成NULL每次调用成功则返回指向被分割出片段的指针。

测试参考源码:

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

int test01()
{
    char a[100] = "abc_3423423_aaaaa_world";
    char *s;//定义一个char的指针变量
    s = strtok(a, "_");
    printf("%s\n", s);
    s = strtok(NULL, "_");//第二次调用的时候,第一个参数写NULL
    printf("%s\n", s);
    s = strtok(NULL, "_");
    printf("%s\n", s);
    s = strtok(NULL, "_");

    printf("%s\n", s);
    s = strtok(NULL, "_");
    printf("%s\n", s);
    return 0;

}


int main()
{
    char a[100] = "abc_3423423_aaaaa_world_dddddd_qqqqqq_xxxxx";
    char *s;
    s = strtok(a, "_");
    while(s)
    {
        printf("%s\n", s);
        s = strtok(NULL, "_");
    }

	test01();
    return 0;
}

测试结果:

abc
3423423
aaaaa
world
dddddd
qqqqqq
xxxxx
abc
3423423
aaaaa
world
Segmentation fault (core dumped)

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转载自blog.csdn.net/zxy131072/article/details/86622679
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