Fix C Round Function Issues

1 year ago
William Carter
1 minute

If you encounter a problem with the round() function in C language and cannot call it, it may be because your compiler does not support this function. Possible solutions include trying the following:

  1. Make sure that your compiler is the latest version and that the environment variables are correctly configured.
  2. Include the math.h header file in the program because the round() function is typically declared in math.h.
  3. If your compiler does not support the round() function, you can create a similar function yourself to achieve rounding, for example:
double my_round(double num) {
    return (num < 0.0) ? ceil(num - 0.5) : floor(num + 0.5);
}

The aforementioned function can be used as an alternative to the round() function to achieve rounding functionality.

I hope the above methods can help you solve the issue of not being able to call the round() function.

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