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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. int myStrlen(char s[]){
  4.     int i;
  5.     for(i=0;s[i]!='\0';i++);
  6.     return i;
  7. }
  8. char*setPalindrome(char s[]){
  9. 	char*tmp;
  10.     int i,len,size;
  11.     scanf("%s",s);
  12.     size=myStrlen(s);
  13.     tmp=(char*)malloc(sizeof(char)*len*2);
  14.     if(tmp==NULL){
  15.         printf("ERROR\n");
  16.         return 0;
  17.     }
  18.     for(i=0;i<size;i++){
  19.         tmp[i]=s[i];
  20.     }
  21.     tmp[size]='\0';
  22.     len=myStrlen(tmp);
  23.      if(tmp==NULL){
  24.         printf("ERROR\n");
  25.         return 0;
  26.     }
  27.     for(i=0;i<len-1;i++){
  28. 		tmp[len+i]=tmp[len-(i+2)];
  29. 	}
  30.     tmp[len*2-1] ='\0';
  31.     return tmp;
  32. }
  33. int main(){
  34.     int i;
  35.     char nyuryoku[1024];
  36.     char *kaibun;
  37.     scanf("%s",nyuryoku);
  38.     kaibun=setPalindrome(nyuryoku);
  39.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  40.     free(kaibun);
  41.     return 0;
  42. }
Success #stdin #stdout 0s 5508KB
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stdin
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abcd
stdout
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abcd
  -> abcdcba
https://ideone.com/wQ0XpK
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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