c语言——连接字符串

//连接字符串
#include<stdio.h>
#include<stdlib.h>
int main()
{
	char s1[100],s2[100],i,j;
	printf("第一个字符串：");
	scanf("%s",s1);
	printf("第二个字符串：");
	scanf("%s",s2);
	for(i=0;s1[i]!='\0';++i)
	{
		
	}
	for(j=0;s2[j]!='\0';++j,++i)
	{
		s1[i]=s2[j];
	 } 
	s1[i]='\0';
	printf("连接后：%s\n",s1);
	system("pause");
	return 0; 
 }