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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 i,size;
  13.  
  14. 	size=myStrlen(s);
  15. 	tmp=(char*)malloc(sizeof(char)*(2*size+1));
  16. 	if(tmp==NULL){
  17. 		printf("ERROR\n");
  18. 		return NULL;
  19. 	}
  20.  
  21. 	for(i=0;i<size;i++)tmp[i]=s[i];
  22. 	for(i=0;i<size;i++)tmp[i+size]=s[size-i-1];
  23.  
  24. 	tmp[2*size]='\0';
  25.  
  26. 	return tmp;
  27. }
  28.  
  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 5320KB
comments (?)
stdin
copy 
abcd
stdout
copy 
abcd
  -> abcddcba
https://ideone.com/Q76TBN
language:
C (gcc 8.3)
created:
15 hours ago
visibility:
public

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