C ++错误：初始化器元素不是常量

Question

I can't get this simple C++ code to work:

int secInt = 5;

double rubbish = secInt/60;

double factor = floor(rubbish);

I always get " ERROR: initializer element is not constant " from line 3

Factor always returns 0.00 in the log

Could anyone help with this, I'm feeling that I overlooked something very simple.

An example of this error can be seen here: http://ideone.com/2Wrkr9

Answer 1

Your code should be inside the main portion of your program:

int main()
{
    int secInt = 583;

    double rubbish = secInt/60.0;

    double factor = floor(rubbish);
}

You should also use standard C++ headers like <cmath> .

Answer 2

You forgot to enclose the code in a function.

Try this.

int main()
{
    int secInt = 5;

    double rubbish = secInt/60.0;

    double factor = floor(rubbish);
}

C++ will begin executing code in the function named main , and from there, call whatever functions are called from main.

Answer 3

double rubbish = secInt/60;

should be

double rubbish = static_cast<double>(secInt)/60;

since secInt =5 , so floor(rubbish) should be 0 even with the above correction.

You should have at least a main function if you do not have any other function in your source file. main is the entry point.

int main()
{
 int secInt = 5;
 double rubbish = static_cast<double>(secInt)/60.0;

 double factor = floor(rubbish);
 return 0;
}