串连字符串strcat

最新推荐文章于 2023-07-19 00:15:00 发布

翻译最新推荐文章于 2023-07-19 00:15:00 发布 · 686 阅读

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#include <iostream>
#include <assert.h>
using namespace std;

//串连字符串
char *strcat1(char *strDest, const char *strSrc)
{
	assert(strDest != NULL && strSrc != NULL);    //断言保证传进来的参数不是空
	char *address = strDest;
	while (*strDest != '\0')
	{
		++strDest;
	}
	while ( (*strDest++ = *strSrc++)!= '\0');
	return address;
}

int main(void)
{
    char s[20] = "hello world";//开辟多一点空间，不如塞不下t啊
	char *t = "hello";
	cout<<sizeof(s)<<endl;
	cout<<strlen(s)<<endl;
	cout<<strcat1(s,t)<<endl;
	cout<<sizeof(s)<<endl;
	cout<<strlen(s)<<endl;
    system("pause");
    return 0;
}