How do I create a multidimensional array that relies on users input for amount of rows?

Question

int NumOfCourses = 0;
int i = 0;
int total = 0;

int main()
{
printf("How many courses");
scanf_s("%d", NumOfCourses);
for (i = 0; i < NumOfCourses; i++)
{
    total += i;
}

int Courses[i][3];

It will not let me use i as a value for the rows of my array because it is not a constant.

Possible duplicate of [How do I work with dynamic multi-dimensional arrays in C?](http://stackoverflow.com/questions/917783/how-do-i-work-with-dynamic-multi-dimensional-arrays-in-c) — Random Davis, Nov 03 '16 at 20:09

Matthias · Answer 1 · 2016-11-04T08:02:11.843

1

The construct you used is called Variable Length Array (VLA). It is mandatory for C99 compiler and optional for C11 compiler. All older versions of C (K&%, C89, C90, C95) do not know VLA. So it depends, which standard your compiler follows. Frequently, compilers know more than one version, and you can select the standard. Try the -std=c99 option.

edited Nov 04 '16 at 08:02

answered Nov 03 '16 at 22:02

Matthias

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How do I create a multidimensional array that relies on users input for amount of rows?

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