C語言密碼問題：設定四位密碼如ABCD，要求檢驗用戶的輸入，如果和密碼不符，要求重新輸入。錯誤次數《=3次

void main (void)

{

char pwd[] = "ABCD";

char newPwd[100] = "";

int i;

while(true)

{

printf("Input password:");

scanf("%s", newPwd);

for(i=0;i<4;i++)

{

if(pwd[i] != newPwd[i])

break;

}

if(pwd[i] == '\0' && newPwd[i] == '\0')

{

printf("Password correct\n");

break;

}

else

{

printf("Password incorrect, try again\n");

}

}

}