1 //子实现字符串的拼接 2 //2017.3.7 3  4 #include 
     
       5 #include 
      
        6 void strcat(char *p1, char *p2,int n1,int n2); 7 int main() 8 { 9     char str1[100] = "dfdfdfdf";10     char str2[200] = "abcdfe";11     char *p1 = str1;12     char *p2 = str2;13     int n1 = 0;14     int n2 = 0;15 16     strcat(p1, p2,n1,n2);17     printf("拼接完成后的字符串为%s\n", str1);18     system("pause");19     return 1;20 }21 22 void strcat(char *p1, char *p2, int n1, int n2)23 {24     int i = 0;25     while (*p1 != '\0')26     {27         n1++;28         p1++;29     }30     //此时已经走到字符串str1的末尾31     //遍历字符串str232     while (*p2 != '\0')33     {34         *(p1) = *(p2 );35         p1++;36         p2++;37     }38     *p1 = '\0';//记住这一句哈39 }