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  1.     #include <stdio.h>
  2.     #include <string.h>
  3.  
  4.     void reverse(char[], int);
  5.  
  6.     int main()
  7.     {
  8.     char a[100];
  9.     fgets(a,sizeof a,stdin); // instead of gets()
  10.  
  11.     reverse(a, strlen(a)-1);
  12.  
  13.     printf("%s\n",a);
  14.  
  15.     return 0;
  16.     }
  17.  
  18.     void reverse(char ar[], int n)
  19.     {
  20.     char c;
  21.     int i = 0;
  22.     // printf("n = %d" , n);
  23.     for ( i = 0; i <= n ; i++){
  24.     c = ar[i];
  25.     ar[i] = ar[n];
  26.     ar[n] = c;
  27.     // printf("Processed");
  28.     n--;}
  29.  
  30.     }
  31.  
  32.  
Success #stdin #stdout 0s 2252KB
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stdin
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abcdef
stdout
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fedcba
https://ideone.com/B9e5hG
language:
C (gcc 8.3)
created:
10 years ago
visibility:
public

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