#include<stdio.h>
#include<stdlib.h>
#include<string.h>
char* Strcat(char* str1, const char* str2) {
	int n = strlen(str1);
	int i = 0;
	while (str1++[i + n] = str2++[i]);
	return str1;
}
void main() {
	char str1[256] = "abcd";
	char str2[256] = "efgh";
	printf("字符串1:%s\n", str1);
	printf("字符串2:%s\n", str2);
	Strcat(str1, str2);
	printf("连接后字符串:%s\n", str1);
	system("pause");
}
     
   
 
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