F&A Diskussionen
Can someone help me please. I can understand the result of the cout << p << endl;
#include <iostream>
using namespace std;
int main() {
int x = 8;
int *p;
p = &x;
cout << *p << endl;
cout << p << endl;
cout << &p;
return 0;
}
1 Stimme
6 Antworten
in the following why the code num=num+1;can't be applied just after while loop in the beginning of curly braces?
#include <iostream>
using namespace std;
int main()
{
int num = 1;
while (num < 6) {
cout << "Number: " << num << endl;
num = num + 1;
}
return 0;
}
0 Stimmen
7 Antworten
can anyone explain this output?
#include <iostream>
using namespace std;
int x(int &a,int &b)
{
a=3;
b=4;
return a+b;
}
int main()
{
int a=2;
int b=7;
int c=x(a,a);
cout <<a<<endl<<b<<endl<<c;
}
output:-
4
7
8
0 Stimmen
2 Antworten
which of the following statements are correct for accessing x?and why?
#include <iostream>
using namespace std;
class test{
public:
int x=9;
};
int main()
{
test t;
test *p=&t;
}
select all that apply:-
a) t.x
b) p.x
c) t->x
d) p->x
1 Stimme
3 AntwortenIn the code below the output is 2. This code is used in a challenge and I get an error when I select the answer 2. It accepts as correct the answer 1 which I believe is wrong. If you agree please thumbs up.
If you find any other errors please post them here!
#include <iostream>
using namespace std;
int main()
{
for(int i=1; i>=1; i++) {
if(i<1 || i>1){
cout << i;
break;
}
}
return 0;
}
8 Stimmen
8 Antworten
can anyone plz explain me this program step by step?#include <iostream>
using namespace std;
class MyClass {
public:
int var;
MyClass() { }
MyClass(int a)
: var(a) { }
MyClass operator+(MyClass &obj) {
MyClass res;
res.var= this->var+obj.var;
return res;
}
};
int main() {
MyClass obj1(12), obj2(55);
MyClass res = obj1+obj2;
cout << res.var;
}I am not getting the part inside operator+
0 Stimmen
8 AntwortenI don't understand how to comes following output???could anyone explain?
#include <iostream>
using namespace std;
int x(int &a,int &b)
{
a=3;
b=4;
return a+b;
}
int main()
{
int a=2;
int b=7;
int c=x(a,a);
cout <<a<<endl<<b<<endl<<c;
}
output:-
4
7
8
1 Stimme
2 Antwortenwhy does this code output that there is an error because the else statement doesn't have a corresponding if statement?. How do i correct this?
#include <iostream>
using namespace std;
int main() {
int a;
for (int x =0; x<5;x++){
cin>>a;
if (a<1){
cout<<"a cannot be less than 1\n";
}
else if (a>10){
cout <<"a cannot be greater than 10\n";
}
}
else{
cout<<"code can run now"<<endl;
}
return 0;
}
3 Stimmen
8 Antworten
why this output only comes 3 and why not output 123?
#include<iostream>
using namespace std;
class A{
public:
virtual void f(){cout<<1;}
};
class B:public A{
public:
void f(){cout<<2;}
};
class C:public B{
public:
void f(){cout<<3;}
};
int main()
{
B *p=new C;
p->f();
}
0 Stimmen
3 Antwortenint main()
{
int num = 1;
int number;
int total = 0;
while (num <= 5) {
cin >> number;
total += number;
num++;
}
cout << total << endl;
return 0;
}
i neeed a very simple discussion please about the loop i don't understand anything
1 Stimme
3 Antworten
what is tjis code problem!
#include <iostream>
using namespace std;
int main()
{
int b = 5;
int arr[b] = {11, 35, 62, 555, 989};
int sum = 0;
for (int x = 0; x < 5; x++) {
sum += arr[x];
}
cout << sum << endl;
return 0;
}
I cannot make an array using int variable in order to define array's element number!?
1 Stimme
7 Antworten
what is the size of operate? assume size of (int)=2
#include <iostream. h>
using namespace std ;
class test
{
int x_ ;
int y_;
} ;
int main() {
test t ;
court<<size of (t)<<" ;
}
-1 Stimme
2 Antworten
can someone please explain why this code keeps telling me complication error instead of outputting the value of speed.
#include <iostream>
using namespace std;
class myClass {
public:
void setcarspeed (int a){
speed=a;
}
int getcarspeed(){
return speed;
}
private:
int speed;
};
int main() {
myClass obj;
obj.setcarspeed (40);
cout<<obj.getcarspeed ;
return 0;
}
2 Stimmen
3 Antwortenhey guys, I've been trying to work out the formula 'v=I*r'. But whenever I run the program and input values for I and r, it doesn't give the right answer.
This is the code
#include <iostream>
using namespace std;
int main() {
int i,r;
int v = i*r;
cout<<"what is the value of i?\n";
cin>>i;
cout<<"what is the value of r?\n";
cin>>r;
cout<<"voltage ="<<v<<endl;
return 0;
}
p/s: I'm new to programming
1 Stimme
8 Antworten#include <iostream>
using namespace std;
int sum(int a, int b=42) {
int result = a + b;
return (result);
}
int main() {
int x = 24;
int y = 36;
//calling the function with both parameters
int result = sum(x, y);
cout << result << endl;
//calling the function without b
result = sum(x);
cout << result << endl;
return 0;
}
why is da last function cout 66 and not 48 isn't it suppose to add 24+24?
1 Stimme
6 Antworten
what will be output??
#include <iostream>
using namespace std;
int main(int a)
{
cout << a << "\n";
return 0;
}
int main(char *a)
{
cout << a << endl;
return 0;
}
int main(int a, int b)
{
cout << a << " " << b;
return 0;
}
int main()
{
main(3);
main("Subodh");
main(9, 6);
return 0;
}
if output is compilation compilation error then how can we overload "main" function in C++
0 Stimmen
5 Antworten
if i text 21 it stacks. program says you are a child. you are a teenager. you are adult. how can i delete this "stack".
#include <iostream>
using namespace std;
int main() {
int age;
cin>>age;
if (age>=14){
cout<<"You're a Teenager"<<endl;
}
if (age>=18){
cout<<"You're adult"<<endl;
}
if (age>=0){
cout<<"You're a Child"<<endl;
}
else{
cout<<"Are u stupid ?"<<endl;
}
return 0;
}
0 Stimmen
4 Antworten
X;
-1 Stimme
4 Antworten
#include <iostream>
using namespace std;
class A{
public:
void f1();
};
class B : public A{
public:
virtual void f1();
}
int main()
{
A * obj = new B;
obj.f1();
}
Ques: can we write virtual before an overridden function from the base class?? if yes which f1() should it call base class f1() or derived class f1()???
0 Stimmen
1 Antwort
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