Assign Matrix

#include <stdio.h>
int main(void) {
  int mat[5][10], i, j, val = 50;
  for (i = 5 - 1; i >= 0; i--)
    for (j = 10 - 1; j >= 0; j--)
      mat[i][j] = val--;
  for (i = 0; i < 5; i++) {
    for (j = 0; j < 10; j++)
      printf("%2d ", mat[i][j]);
    puts("");
  }
  return 0;
}