#include <stdio.h> #define MAX 50 /* 函数rep实现对s中出现的s1中的字符替换为s2中相应的字符 */ rep(char *s,char *s1,char *s2) { char *p; for(;*s;s++)/*顺序访问字符串s中的每个字符*/ { for(p=s1;*p&&*p!=*s;p++);/*检查当前字符是否在字符串s1中出现*/ if(*p)*s=*(p-s1+s2);/*当前字符在字符串s1中出现,用字符串s2中的对应字符代替s中的字符*/ } } main( )/*示意程序*/ { char s[MAX];/*="ABCABC";*/ char s1[MAX],s2[MAX]; clrscr(); puts("Please input the string for s:"); scanf("%s",s); puts("Please input the string for s1:"); scanf("%s",s1); puts("Please input the string for s2:"); scanf("%s",s2); rep(s,s1,s2); puts("The string of s after displace is:"); printf("%s\n",s); puts("\n Press any key to quit..."); getch(); }