#include <stdio.h>

const int maxsize=10;

int main()
{
    int maxnum=100;
    int v1[maxsize];
    int v2[maxsize];
    int m1[maxsize][maxsize];
    int i, j;

    printf("Generating vector 1...\n");
    for(i=0; i<maxsize; i++) {   //indexes in C start on 0.
        v1[i] = rand() % maxnum; // <--remainder of random value when divided by
    }				 // maxnum	
    printf("Generating vector 2...\n");
    for(i=0; i < maxsize; i++) {
        v2[i] = rand() % maxnum;
    }

     printf("V1: ");
     for(i=0; i<maxsize; i++) {
	  printf("%5d", v1[i]);   // width of 5 field for each vector value
     }				  // %d means print an int
     printf("\n");
     printf("V2: ");
     for(i=0; i<maxsize; i++) {
	  printf("%5d", v2[i]);
     }
     printf("\n");
     printf("Demo writing a vector with a do loop:\n");
     for(j=0; j < maxsize; j++) {
	  printf("%5d %5d\n", v1[j], v2[j]);
     }
     printf("\n");
     printf("Generating matrix 1...\n");
     for(i=0; i<maxsize; i++)
	 for(j=0;j < maxsize; j++)
             m1[i][j] = rand() % maxnum;
     printf("Printing the matrix with implied do loops:\n");
     for(i=0; i<maxsize; i++)  {
	 for(j=0;j < maxsize; j++) {
             printf("%5d", m1[i][j]);
	 }
	 printf("\n");
     }

     return 0;
}