#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define ROWS 30
#define COLUMNS 10
int main()
{
int row,column;
srand((unsigned)time(NULL));
for(row = 0; row < ROWS; row++)
{
for(column = 0; column < COLUMNS;column ++)
printf("%2d\t",rand() %100);
putchar('\n');
}
return(0);
}