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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int myStrlen(char s[]){
  5.     int i;
  6.     for(i=0;s[i]!='\0';i++);
  7.     return i;
  8. }
  9.  
  10. char *setPalindrome(char s[]){
  11. char *tmp;
  12. int len=myStrlen(s);
  13. tmp=(char *)malloc(sizeof(char)*(len*2+1));
  14. if(tmp==NULL){
  15. printf("ERROR\n");
  16. return NULL;
  17. }
  18. int i;
  19. for(i=0;i<len;i++){
  20. tmp[i]=s[i];
  21. tmp[len+i]=s[len-1-i];
  22. }
  23. tmp[len*2]='\0';
  24. return tmp;
  25. }
  26.  
  27.  
  28. //メイン関数はいじる必要はありません
  29. int main(){
  30.     int i;
  31.     char nyuryoku[1024]; //入力
  32.     char *kaibun;   //回文を受け取る
  33.     scanf("%s",nyuryoku);
  34.     kaibun = setPalindrome(nyuryoku);
  35.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  36.     free(kaibun);
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/qdXBRY
language:
C (gcc 8.3)
created:
2 hours ago
visibility:
public

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