#include<stdio.h>#include<string.h>#include<stdlib.h>void decrypt(char *cipher,char *plain){ int i,j=0,len; char a[201]; len=strlen(cipher); plain=(char*)malloc(len*sizeof(char)); for(i=0;i<len-1;i=i+2,j++) { plain[j]=(cipher[i]-'0')*10+cipher[i+1]-'0'+24; printf("%c",plain[j]); }}int main(){ char str[201]; gets(str); char *p=str; char *a=NULL; decrypt(p,a); return 0;}