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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. // 関数の中でtmpに対してmallocして
  11. // そこに回文を代入してreturnで返しましょう
  12. char *setPalindrome(char s[]){
  13. 	char *tmp,*a;
  14. 	int i,k,j,n,b;
  15. 	k=myStrlen(s);
  16. 	tmp=(char*)malloc(sizeof(char)*k*2);
  17. 	a=(char*)malloc(sizeof(char)*k);
  18. 	for(i=0;i<k;i++){
  19. 		tmp[i]=s[i];
  20. 		a[i]=s[i];
  21. 	}
  22. 	for(i=1;i<=k;i++){
  23. 		n=k-i;
  24. 		for(j=0;j<i;j++){
  25. 			if(tmp[n]==a[k-j-1]){
  26. 				if(j==i-1) b=i;
  27. 			}else{
  28. 				break;
  29. 			}
  30. 			n++;
  31. 		}
  32. 	}
  33. 	for(i=0;i<k-b;i++){
  34. 		tmp[i+k]=a[k-i-b-1];
  35. 	}
  36. 	return tmp;
  37. }
  38.  
  39.  
  40. //メイン関数はいじる必要はありません
  41. int main(){
  42.     int i;
  43.     char nyuryoku[1024]; //入力
  44.     char *kaibun;   //回文を受け取る
  45.     scanf("%s",nyuryoku);
  46.     kaibun = setPalindrome(nyuryoku);
  47.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  48.     free(kaibun);
  49.     return 0;
  50. }
Success #stdin #stdout 0s 5284KB
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https://ideone.com/q9VpH8
kadai2 11/14
language:
C (gcc 8.3)
created:
19 hours ago
visibility:
public

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