C语言从控制台读取一行数据并回显

下面的程序，不停地从控制台读入一行数据并回显，直到遇到空行结束。

代码如下：

#include <stdio.h>

int main(void) {
    char c;
    int count;

    for(;;){
        count=0;
        printf("Please enter a line [blank line to terminate]> ");
        do{
            c=getchar();
            putchar(c);
            count++;
        }while (c!='\n');
        if(count==1) break;
    }
}

可能的输出结果：
Please enter a line [blank line to terminate]> 123456
123456
Please enter a line [blank line to terminate]> abcxyz
abcxyz
Please enter a line [blank line to terminate] > C语言中文网
C语言中文网
Please enter a line [blank line to terminate]> game over
game over
Please enter a line [blank line to terminate]>

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