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//program to create two functions to find area and perimeter of square (side of square is passed to functions as argument) #include<iostream.h> #include<conio.h> void area(int); void perimeter(int); void area(int side) { int ar; ar=side*side; cout<<"area of square is "<<ar; } void perimeter(int side) { int per; per=4*side; cout<<"perimeter of square is "<<per; } void main() { int s; clrscr(); cout<<"enter side of square"; cin>>s; area(s); perimeter(s); getch(); }