c - expression did not evaluate to a constant ERROR code -


so trying learn c , trying make code sort of array's elements lowest highest, it's not complete wanted see random numbers printed.

anyway, getting error e0028 & c2131 (visual studios) says "expression must have constant value" & "expression did not evaluate constant." int goals[howmany];is vs telling me have error 

int main() {     int i, temp, swapped;     int howmany = 10;     int goals[howmany];      (i = 0; < howmany; i++) {         goals[i] = (rand() % 25) + 1;      }      printf("original list\n");         (i = 0; < howmany; i++) {             printf("%d \n", goals[i]);         }     return 0; }

this how code written out in tutorial watching , using code:blocks. know 2 compilers can different hoping can let me know what's going on or how fix this.

visual studio doesn't support variable length arrays. c little tricky, , compiler/flags use matters. example, if compile gcc compiler, using -std=c99 flag allow run code no errors (since -std=c99 supports variable length arrays).

i'm not sure how compilation in visual studio works, that's problem. don't c programming in vs reason. it's easier me use vim, , compile @ command can specify compiler settings.


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