#include <stdio.h>
#include <stdlib.h>
#include <string.h>
//最大緩沖區1024
#define MAX_BUFFER 1024
#define SPACE ' '
#define TAB '\t'
//計算空格數
int CalculateNumberOfSpaces(int Offset, int TabSize)
{
return TabSize - (Offset % TabSize);
}
/* K&R's getline() function from p29 */
int getline(char s[], int lim)
{
int c, i;
for (i = ; i < lim - && (c = getchar()) != EOF && c != '\n'; ++i)
s[i] = c;
if (c == '\n')
{
s[i] = c;
++i;
}
s[i] = '\0';
return i;
}
//主函數
int main(void)
{
char Buffer[MAX_BUFFER];
int TabSize = ; /* A good test value */
int i, j, k, l;
while (getline(Buffer, MAX_BUFFER) > )
{
for (i = , l = ; Buffer[i] != '\0'; i++)
{
if (Buffer[i] == TAB)
{
j = CalculateNumberOfSpaces(l, TabSize);
for (k = ; k < j; k++)
{
putchar(SPACE);
l++;
}
}
else
{
putchar(Buffer[i]);
l++;
}
}
}
return ;
}