C++ Program to take a square of an integer value:
C++ Program to square a number: Code: #include <iostream> //include libraries using namespace std; int main() { int i=1,j=0,k=0; // defining numerical variable value cout<<"enter value:"; while(i<=20) // using while loop to execute the same block of code until condition is met { cin>>j; k=j*j; i++; // it mean increment cout<<"square of enter number is="<<k; ...