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      Question

      Complete the C function to find the first occurrence of

      a character c in a string str and return its index. Return -1 if not found. #include // For strlen, though not strictly needed for this loop int find_char_index(const char* str, char c) {     int i = 0;     while (str[i] != '\0') {         if (_________ ) { // Line to complete             return i;         }         i++;     }     return -1; }
      A str[i] == c Correct Answer Incorrect Answer
      B str[i] != c Correct Answer Incorrect Answer
      C c == str[i] Correct Answer Incorrect Answer
      D str[i] == '\0' Correct Answer Incorrect Answer
      E i == c Correct Answer Incorrect Answer

      Solution

      Correct Answer: A (Or C, they are equivalent. But A is more conventional.)

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