C语言要求控制台 限制控制台只能一行输入20个字符,怎么搞啊

Question

如题所述

Answer 1

#include <stdio.h>
#include <conio.h>
#define MAX_LINE_INPUT_COUNT 20

void GetInputCharacter(char* szInput)
{
int i;
char cTmp;
for (i=0; i<MAX_LINE_INPUT_COUNT; i++)
{
cTmp = getch();
if (cTmp == '\x0d' || cTmp == '\n')
{
printf("\n");
break;
}
else
{
szInput[i] = cTmp;
}
printf("%c",szInput[i]);
}

while (i == MAX_LINE_INPUT_COUNT)
{
cTmp = getch();
if (cTmp == '\x0d' || cTmp == '\n')
{
printf("\n");
break;
}
}
}

void main()
{
char szInput[MAX_LINE_INPUT_COUNT+1] = {0};
GetInputCharacter(szInput);
printf("your input string: %s\n",szInput);
return;
}