Multiply

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(void) {
  /* system(clear); */
  putchar('\n');

  srand(time(0));

  int a = (rand() % 30) + 1;
  int b = (rand() % 40) + 1;
  int c = 0;
  int sum = 0;
  int ct = 0;

  sum = a * b;
  printf("Multiplication programme.\n");

  do {
    printf("%d x %d = ", a, b);
    scanf("%d", &c);
    putchar('\n');

    if (c == sum) {
      printf("correct\n");
      printf("::: %d x %d = %d\n", a, b, sum);
      printf("=========\n");
    }
    else if (ct++ == 2) {
      printf("the correct answer was: %d x %d = %d\n", a, b, sum);
      break;
    }
    else {
      printf("%d is incorrect.\n", c);
      printf("=========\n");
      printf("try again\n");
    }
  } while (c != sum);

  return 0;
}