Question

我正在尝试加密用户根据我已经定义的2个字符串写的内容

该计划运作良好

但是当用户写超过30个字符时我遇到了问题

在加密结束时，程序会出现随机字符

#include<stdio.h>
#include<string.h>

main()
  {

  char  read [120] ;
  char  Encryption [55] = {'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
  char  Decryption [55] = {'k','K','f','z','L','S','j','T','v','u','B','F','q','U','P','h','n','M','i','Z','w','x','y','Y','W','t','m','s','N','J','Q','E','G','l','X','a','A','c','b','C','e','o','D','H','I','r','d','R','V','p','p','g'};
  char  new[120];
  int i , k;

  gets(read);

  for (i=0 ; i<strlen(read) ; i++)
  {
     for(k=0 ; k<strlen(Encryption) ; k++){
             if (read[i]==' ')  new[i]=' ';
             else if (read[i] ==  Encryption[k]){
                         new[i]=Decryption[k];}
                         }
             }


     puts(new);
     getch();

  }

例如当用户写（（（ALNOR ALNOR）））输出为（（（kFUPM kFUPM）））

但是当我写（（（ALNOR ALNOR ALNOR ALNOR ALNOR）））输出应该是（（（kFUPM kFUPM kFUPM kFUPM kFUPM）））但是apears是什么（（（kFUPM kFUPM kFUPM kFUPM kFUPM H＆amp; M）））

我不会从H＆amp; M来到哪里，当我再次运行H＆amp; M chaing to other else

??? !!!

Answer 1

As＆＃39; Drax＆＃39;表示，代码需要正确终止“新”＆＃39;串。也许在for循环之后插入一行：

  for (i=0 ; i<strlen(read) ; i++)
  {
     for(k=0 ; k<strlen(Encryption) ; k++){
             if (read[i]==' ')  new[i]=' ';
             else if (read[i] ==  Encryption[k]){
                         new[i]=Decryption[k];}
                         }
             }
  }

  new[i] = '\0';

c中加密程序程序中的问题

1 个答案: