The document contains multiple C++ programs that demonstrate basic operations: displaying a message a specified number of times, calculating a value based on input parameters, and computing simple interest. Each program prompts the user for input values, performs the calculation, and outputs the result. Overall, the document illustrates fundamental programming concepts and user interaction in C++.

1. /*Program to input an integer value from
keyboard and display “WELDONE ” on screen*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int i,n;
cout<<"nnttEnter number of times:";
cin>>n;
for(i=0;i<n;i++)
{
cout<<"nnttWELDONE";
}
getch();
}

2. OUTPUT:

3. /*Program to read values of a,b,c and find
x where x=a/(b-c)*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a,b,c,x;
cout<<"nnttEnter a:";
cin>>a;
cout<<"nnttEnter b:";
cin>>b;
cout<<"nnttEnter c:";
cin>>c;
x=a/(b-c);
cout<<"nnttValue of X is:"<<x;
getch();
}

4. OUTPUT:

5. /*Program to calculate simple interest*/
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int si,p,n,r;
cout<<"nt************Simple Interest******************";
cout<<"nnttEnter Principal Amount:";
cin>>p;
cout<<"nnttEnter number of Years:";
cin>>n;
cout<<"nnttEnter the rate of interest:";
cin>>r;
si=(p*n*r)/100;
cout<<"nnttThe simple interest is:"<<si;
getch();
}

6. OUTPUT: