带手子们，我这个为啥正常输入一次后，没办法quit啊

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
void display(char cr, int lines, int width);
int main(void)
{
int ch;
int rows, cols;
printf("Enter a charater and two numbers:\n");
while ((ch = getchar()) != '\n')
{
while (scanf("%d %d", &rows, &cols) == 2)
{
while (getchar() != '\n')
continue;
display((char)ch, rows, cols);
printf("Enter another one charater and two numbers;\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'); //开始新的一行；
}
}