strcpy和strcat的函数原型

2010-09-14

#include <stdio.h>char strA[80] = "A string to be used for demonstration purposes";char strB[80];char strC[80] = ">>strcat now!!!";char *my_strcpy(char *destination, const char *source){ char *p = destination; while(*source != '/0'){ *p++ = *source++; } *p = '/0'; return destination;}char *my_strcat(char *dest, const char *source){ char *p = dest; while(*dest != '/0') { dest++; } while((*dest++ = *source++) != '/0') ; //*p = '/0'; return p;}int main(void){ my_strcpy(strB, strA); puts(strB); my_strcat(strB, strC); puts(strB);}

 

运行结果：

[root@localhost pointC]# ./program3_2A string to be used for demonstration purposesA string to be used for demonstration purposes>>strcat now!!!