字符串,转成整型数字,用到一个函数atoi(const char *p)
char get_str()
{
char a = "20";
return a;
}
int main(void)
{
char *str = NULL;
int vlaue;
str = get_str();
printf("str is %s\n", str);
value = atoi(str);
printf("value is %d\n", value);
return 0;
}
运行结果是:
str is 20
value is 20
这样就完美的把字符串“20”,转成了整型数字20