Prata list 8.5

#include <stdio.h>
//i have to rid of everything, and leave only basic, to find out, how exactly combination of getchar() and
//scanf() works, when they share potok
//now i can't predict, what happened if i enter
//s k 1 2 and why
//.....
//i have to be able to predict exactly the way programm works, before running it


void display(char cr, int lines, int width);

int main(void)
{
    int ch; /* character to be printed */
    int rows, cols; /* number of rows and columns */
    printf("Enter a character and two integers:\n");

    while ((ch = getchar()) != EOF)//if '\n' instead of EOF, works just once!
    {
        printf("before scanf rows is %d, cols is %d\n",rows,cols);
        printf("scanf returns %d elements\n", scanf("%d %d", &rows, &cols));
        printf("after scanf rows is %d, cols is %d\n",rows, cols);
        //scanf("%d %d", &rows, &cols);
        display(ch, rows, cols);
        printf("Enter another character and two integers;\n");
        printf("Enter a newline to quit.\n");
    }
    printf("Bye.\n");

return 0;
}

void display(char cr, int lines, int width)
{
    int row, col;
    for (row = 1; row <= lines; row++)
    {
        for (col = 1; col <= width; col++)
        putchar(cr);
        putchar('\n'); /* end line and start a new one */
    }
}