F&A Diskussionen
#include <iostream>
using namespace std;
int main()
{
int num = 7;
while (num > 6) {
cout << "Number: " << num;
0 Stimmen
3 Antworten
how output 26?
#include <iostream>
using namespace std;
int main()
{
int x=1;
for(;x<5;x++)
{
x+=x;
cout<<x;
}
}
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2 Antworten
#include <iostream>
using namespace std;
void test(int*, int*);
int main() {
int a = 5, b = 5;
cout << "Before changing:" <
-1 Stimme
2 Antworten
C++ says in the end of every statement we should use semicolon but why is semicolon not used in the end of #include <iostream>
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2 Antworten
#include <iostream>
using namespace std;
int main()
{
int i=20,j=10;
do {j+=i;
i++;}
while(j<=200);
}
how many times loops will run and output of "j"????
1 Stimme
5 Antworten
why output 100?
#include <iostream>
using namespace std;
int main()
{
int x=1;
for(;x<100;x++)
{if(x>5) continue;
x*=x;
}
cout<<x;
}
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2 Antwortenwhy this output 5 and why not 2?
#include <iostream>
using namespace std;
void func(int &x)
{
x=5;
}
int main()
{
int x=2;
func(x);
cout<<x;
}
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7 Antwortenwhy we use return in this prog.
#include <iostream>
using namespace std;
int timesTwo(int x) {
return x*2;
}
in
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1 Antwort
#include <iostream>
using namespace std;
int calc(int &a,int &b,int c=6)
{
a+=b;
b-=c;
c=a+b;
}
int main()
{
int calc(int,int,int);
int x=2,y=3,z=4; cout<<x<<endl<<y<<endl<<z<<endl;
calc(x,y,z); cout<<x<<endl<<y<<endl<<z<<endl;
calc(5,6,z); cout<<x<<endl<<y<<endl<<z<<endl;
return 0;
}
1 Stimme
5 Antworten
we know that #include <iostream> is a library used for cout and cin, can someone tell me which library is used to get "sine" and "cosine" functions
1 Stimme
5 Antworten
#include <iostream>
#include <bitset>
int main()
{
int myDecimalNumber;
std::cin >> myDecimalNumber;
std::string binary = std::bitset<8>(myDecimalNumber).to_string(); //to binary
std::cout<<binary<<"\n";
unsigned long decimal = std::bitset<8>(binary).to_long();
std::cout<<decimal<<"\n";
return 0;
}
2 Stimmen
5 Antworten
#include <iostream>
using namespace std;
int main() {
int a[4]={1,2,3,4};
a[1]=*(a+2);
*(a+2)=a[3]++;
cout<<a[1]+a[2];
}
could someone explain (comment each line) why the output is 7 ?
1 Stimme
4 Antworten
#include <iostream>
using namespace std;
int main()
{
int num = 1;
int number;
int total = 0;
while (num <= 5)
-2 Stimmen
2 Antworten
Why it is that while we include header file here we only have to write <iostream> but while coding in computer <iostream.h>
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2 Antworten
#include <iostream>
using namespace std;
int main()
{
int num = 1;
int number;
int total = 0;
while (num <= 5)
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2 Antworten
what's wrong with this code??
#include <iostream>
using namespace std;
int main() {
int n;
int max=0;
while (n!=0)
{
cin>>n;
if(n>max)
max=n;
}
cout <<max;
return 0;
}
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5 Antworten
#include <iostream>
using namespace std;
int main() {
int i;
for(i=1;i<=6;i+=3)
{
cout<<i;
}
return 0;
}
hello guys pls tell me the output
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2 Antworten
wt is output if a=2.0,b=2.5
#include <iostream>
using namespace std;
int main()
{
int a, b;
int sum;
cout << "Enter a number \n";
cin >> a;
cout << "Enter another number \n";
cin >> b;
sum = a + b;
cout << "Sum is: " << sum << endl;
return 0;
}
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21 Antworten
What is the output and how dose it came ?
#include <iostream>
int main() {
std::cout << (10 & 6) << std::endl;
std::cout << (10 | 6) << std::endl;
return 0;
}
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3 Antworten
can I use #include <iostream> in place of <iostream.h> in claas 12 board exam ? In my textbook i have read about using <iostream.h> . what is the actual difference btween these two?
2 Stimmen
2 Antworten
Hi! can anyone help me to write this simple code: #include <iostream>
using namespace std;
int main()
{
if (7 > 4) {
cout << "Yes";
}
return 0;
}
into Microsoft Visual Studio 2015?
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4 Antworten
is STD inside <iostream>?
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3 Antworten
#include <iostream>
using namespace std;
class employee
int main()
{
private:
double salary;
public:
void getsalary(double sal)
{
salary=sal;
}
void display()
{
cout<<"the salary:"<<salary;
}
};
void main ()
{
employee programmer;
employee manager;
manager.getsalary (60000.0);
programmer.getsalary(40000.0);
manager.display();
programmer.display();
return 0;
}
1 Stimme
5 Antworten
#include <iostream>
using namespace std;
int main()
{
int b[];
int i=0,sum=0;
while(cin>>b[i])
{sum=sum+b[i];
i++;}
cout<<sum<<endl;
}//what is wrong in this code
//how can I take multiple inputs into an array
//I want to take unknown no. Of inputs
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4 Antworten
I wrote a simple basic c++ code in my PC notepad and I saved it with .cpp extension also. But when I run this program in any browser it shows the code as it is... Do c++ code can be written in notepad and can be run? Please answer.
#include <iostream>
using namespace std;
int main()
❴
cout << "hello";
return0;
❵
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10 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
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2 AntwortenCan 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
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
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3 Antwortenin 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;
}
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7 Antworten
I 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 Antwortencan 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+
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8 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
where did the error go
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1 Antwort
why 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
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
Помогите с задачами
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1 Antwortif i download the programs for c++ on my pc ( codebuilds and the compiler ) and i want to write a program in my package ( workspace ) i create a new file and write smthing beginning
#include <iostream>
using namespace std;
int main ()
{
...
}
and i want to run it, it always runs this first program : Hello World. and not my written program how can i run just my written program ?
have i maybe to write anything else as
int main () {} ?
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16 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
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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
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;
}
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4 Antwortenwhat 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++
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5 Antworten
Heute heiß
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