/* Bai tap 9_5 - Tim so tu trong chuoi */

#include <stdio.h>

#include <string.h>

#include <conio.h>

#pragma warn -pia

char *trim(char *chuoi)

{

char *p;

while (p = strstr(chuoi, " "))

memmove(p, p+1, strlen(chuoi) - (p - chuoi));

if (chuoi[0] == ' ')

memmove(chuoi, chuoi+1, strlen(chuoi) - 1);

if (chuoi[strlen(chuoi)-1] == ' ')

chuoi[strlen(chuoi)-1] = 0;

return chuoi;

}

void main()

{

char chuoi[125];

int i = 0, count = 0;

printf("

Nhap chuoi mau : ");

textattr(0x1e);

gets(chuoi);

trim(chuoi);

if (strlen(chuoi))

{

while(chuoi[i] != 0)

if (chuoi[i++] == ' ')

count++;

count++;

}

printf("

So tu co trong chuoi : %d", count);

getch();

}