Palindromi

input/code.c: In function 'main':
input/code.c:5:3: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 |   scanf("%s", str);
      |   ^~~~~~~~~~~~~~~~

#include <stdio.h>

int main() {
  char str[100];
  scanf("%s", str);

  int len = 0;
  while (str[len] != '\0') len++;
  // printf("len: %d\n", len);

  int changes = 0;
  for (int i = 0; i < len / 2; i++) {
    if (str[i] != str[len - 1 - i]) {
      changes++;
    }
  }
  
  // printf("changes: ");
  printf("%d\n", changes);

  return 0;
}

Test 1 (public)

Verdict: ACCEPTED

Test 2 (public)

Verdict: ACCEPTED

Test 3 (public)

Verdict: ACCEPTED

Test 4 (public)

Verdict: ACCEPTED

Test 5 (public)

Verdict: ACCEPTED

Test 6 (public)

Verdict: ACCEPTED

Test 7 (public)

Verdict: ACCEPTED

Test 8 (public)

Verdict: ACCEPTED

Test 9 (public)

Verdict: ACCEPTED

Test 10 (public)

Verdict: ACCEPTED