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Program of swapping two varibales:
void swap(int *, int *); // This is swap's prototype
int main()
{
int x = 5, y = 7;
swap(&x, &y);
cout << "\n x is now "<< x << " and y is now " << y << '\n';
return 0;
}
void swap(int *a, int *b) // swap is actually defined here
int temp;
temp = *a;
*a = *b;
*b = temp;
When declaring a variable of data type pointer, use the * in front of the variable name. These variables hold a memory location (like B45CDF), not an actual value like 30 or A:
how to use and what is implicit and explicit constructor
board colouring program
A more advanced data type is the structure; here we can define a template as a collection of different variables e.g. struct birthdate { int month; int day;
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