C strchr strrchr查找一个字符

C strchr strrchr查找一个字符

头文件

函数原型

char *strchr(char const *str, int ch);
char *strrchr(char const *str, int ch);

注意事项

返回值的类型

int main()
{
char *string = "abcde";
char *ptr = strchr(string, 'c');
printf("%d\n", ptr == &string[2]); // 1
return EXIT_SUCCESS;
}

返回值的区别

int main()
{
char *string = "abcba";
printf("%d\n", strchr(string, 'b') == &string[1]); // 1
printf("%d\n", strrchr(string, 'b') == &string[3]); // 1
return EXIT_SUCCESS;
}