- To swap 2 numbers
User Input
1st number: 3
2nd number: 5
After Swap, Output:
1st number : 5
2nd number : 3
#include <iostream>
using namespace std;
int main() {
int n1,n2,temp;
cout<<"Enter 1st number: ";
cin>>n1;
cout<<"Enter 2nd number: ";
cin>>n2;
temp=n1;
n1=n2;
n2=temp;
cout<<"After Swap"<<endl;
cout<<"1st number :"<<n1<<"\n2nd number :"<<n2;
return 0;
}
Enter 1st number : 7 Enter 2nd number : 15 After Swap 1st number : 15 2nd number : 7Program
Here we are using 3rd variable (above code temp
)
temp = n1; //Insert 1st variable data into temp variable
n1 = n2; //Insert 2st variable data into 1st variable
n2 = temp; //Finally, Insert temp variable data into 2nd variable
Concept