// cbai19.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <stdio.h>
#include <conio.h>
#include <ctype.h>
void doi_kytu(char s[])
{
int i=0;
while (s[i]!='\0')
{
if (s[i]!=' ') s[i] = s[i]+'a'-'A';
i++;
}
s[i] = '\0';
}
int _tmain(int argc, _TCHAR* argv[])
{
char s[100];
printf("Nhap vao mot xau ki tu: ");
gets(s);
printf("\nXau ban dau: %s \n",s);
doi_kytu(s);
printf("\nXau sau khi chuyen doi: %s ",s);
getch();
return 0;
}
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