Question

Write a function treble that takes a pointer to an integer and triples its value. Note that this function does not return anything. You can test it using the following example or something similar:
int i=7;
cout << "old value; i="<<i<< "-"
treble(&i);cout <<"New Value:i="<< i <<"\n";

Which prints: Old vvalue:i =7 - new value: i=21

Answer 1

#include <iostream>

using namespace std;

void treble(int *ptr){

*ptr = 21;

}

int main() {

int i=7;

cout << "old value; i="<<i<< "-";

treble(&i);

cout <<"New Value:i="<< i <<"\n";

//Which prints: Old vvalue:i =7 - new value: i=21

}

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PLEASE COMMENT if there is any concern.

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