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

int matrix(int arrayrow, int arraycol, int range){
  int j;
  int i;
  int matrix[arrayrow][arraycol];
  FILE *fp;
  fp = fopen("/matrix.txt", "w");

  if(fp == NULL){
    perror("failed to open sample.txt");
    return EXIT_FAILURE;
  }
  else{
    srand( time(NULL) );
    fprintf(fp,"A=[");
    for(j=0; j < arrayrow; j++){
      for(i=0; i < arraycol; i++){
        matrix[i][j] = rand() % range + 1;
    switch(i){
      case 0: fprintf(fp,"%i", matrix[i][j]); break;
      default: fprintf(fp," %i", matrix[i][j]); ;
    }
      }
      if(j<arrayrow-1){
        fprintf(fp,";");
      }
    }
    fprintf(fp,"]");
    fclose(fp);
  }
  return EXIT_SUCCESS;
}

int main(void)
{
int arrayrow,
    arraycol,
    range;

      printf("Enter the range of numbers>");                /* input til range af random */
      scanf("%i", &range);

      printf("\nInput number of rows in the matrix>");      /* input til antal rækker i matricen */
      scanf("%i", &arrayrow);

      printf("\nInput number of collumns in the matrix>");  /* input til antal søjler i matricen */
      scanf("%i", &arraycol);

    matrix(arrayrow, arraycol, range);                      /* kalder funktionen matrix() */

 return(0);
}