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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;
  14. int size,i,j;
  15. size=myStrlen(s);
  16. tmp=(char*)malloc(sizeof(char)*(size*2+1));
  17. if(tmp==NULL){
  18. 	printf("ERROR");
  19. 	return 0;
  20. }
  21. for(i=0;s[i]!='\0';i++){
  22. 	tmp[i]=s[i];
  23. }for(j=0;j<=size;j++){
  24. 	tmp[size+j]=s[size-j-1];
  25. }
  26. tmp[2*size]='\0';
  27. return tmp;
  28. }
  29.  
  30.  
  31. //メイン関数はいじる必要はありません
  32. int main(){
  33.     int i;
  34.     char nyuryoku[1024]; //入力
  35.     char *kaibun;   //回文を受け取る
  36.     scanf("%s",nyuryoku);
  37.     kaibun = setPalindrome(nyuryoku);
  38.     printf("%s\n  -> %s\n",nyuryoku,kaibun);
  39.     free(kaibun);
  40.     return 0;
  41. }
Success #stdin #stdout 0s 5320KB
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ajsj
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https://ideone.com/FhquCy
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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