50%

#include <stdio.h>
#include <math.h>
#define ROWS 8
#define COLS 8
//REPLACES PART OF AN ARRAY WITH ZEROS, HAVE TO FIGURE OUT HOW TO DO IT FOR DIFFERENT PARTS OF ARRAY
void pop_arr(int r,int c,int a[r][c]);
void pr_arr(int r,int c,int a[r][c]);
void change_arr(int r,int c,int a[r][c]);
int main()
{
    int result,one[ROWS][COLS];
    pop_arr(ROWS,COLS,one);
    pr_arr(ROWS,COLS,one);
    change_arr(ROWS,COLS,one);
    pr_arr(ROWS,COLS,one);



    return 0;
}

void pop_arr(int r,int c,int a[r][c])
{
    int i,j;
    for(i=0;i<r;i++)
    {
        for(j=0;j<c;j++)
        {
            a[i][j]= rand()%10;
        }
    }
}
void pr_arr(int r,int c,int a[r][c])
{
    int i,j;
    for(i=0;i<r;i++)
    {
        for(j=0;j<c;j++)
        {
            printf("%d\t",a[i][j]);
        }
        printf("\n");
    }
}
void change_arr(int r,int c,int a[r][c])
{

    int i,j;
    for(i=0;i<r;i++)
    {
        for(j=0;j<c;j++)
        {
            //if((i>r/2)||(j<i||j>c-i))//all zeros, expept over main&&dop diagonal
            if((i<r/2&&j>=c-i)  ||(i>=r/2&&j>=c/2-i))
                a[i][j]=0;
        }
    }
}