字符串连接

不用string实现字符串连接

#include<iostream>
#include<cstdio>
#include<string.h>
#define N 100
using namespace std;
int main(void){
	char a[N];
	char b[N]; 
	char c[2*N];
	int i;
	cout<<"请输入a："<<endl;
	cin>>a;
	cout<<"请输入b："<<endl;
	cin>>b;
	int lenght1;
	int lenght2;
	lenght1=strlen(a);
	lenght2=strlen(b);
	for(i=0;i<lenght1;i++){
		c[i]=a[i];
	}
	for(i=lenght1;i<lenght1+lenght2;i++){
		c[i]=b[i-lenght1];
	}
	c[lenght1+lenght2]='\0';
	cout<<"连接完的字符串为："<<c<<endl;
}

运行结果：