enter a char: c
Enter col, row: 5 9

# include <stdio.h>

void chline (char, int, int);

int main (void)
{
    int col, row;
    char ch;
   
    printf ("enter a char: ");
    while ( ch = getchar() != '#')
    {
        if (ch == '\n')
            continue;
        printf ("Enter col, row: ");
        if (scanf ("%d%d", &col, &row) != 2)
            break;
        chline (ch, col, row);
    }

    return 0;
}

void chline (char ch, int n1, int n2)
{
    int col, row;

    for (col=0; col<n1; ++col)
    {
        for (row=0; row<n2; ++row)
            printf ("%c", ch);
        printf ("\n");
    }

}

输出很多笑脸，为什么会这样？

谢谢，是这个错误。

我还是不够仔细，重视！！！