Havola orqali uzatish
Havola orqali uzatish
Oldingi sahifadagi misollarda funksiyaga parametrlarni uzatishda oddiy o‘zgaruvchilardan foydalandik.
Funksiyaga havolani (reference) ham uzatishingiz mumkin.
Bu argument(lar) qiymatini o‘zgartirish kerak bo‘lganda foydali bo‘lishi mumkin:
Misol
Butun sonni havola orqali uzating:
void changeValue(int &num) {
num = 50;
}
int main() {
int value = 10;
changeValue(value); // Call the function and change the value to 50
cout << value;
return 0;
}
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Misol
Ikkita butun sonni havola orqali uzating:
void swapNums(int &x, int &y) {
int z = x;
x = y;
y = z;
}
int main() {
int firstNum = 10;
int secondNum = 20;
cout << "Before swap: " << "\n";
cout << firstNum << secondNum << "\n";
// Call the function, which will change the values of firstNum and secondNum
swapNums(firstNum, secondNum);
cout << "After swap: " << "\n";
cout << firstNum << secondNum << "\n";
return 0;
}
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Misol
Stringni havola orqali uzating:
void modifyStr(string &str) {
str += " World!";
}
int main() {
string greeting = "Hello";
modifyStr(greeting);
cout << greeting;
return 0;
}
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