programming-for-dummies

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The Structure of a C/C++ Program
The Structure of a C/C++ Program
A C program is divided into multiple functions where each function acts like
a separate building block. To identify the starting point of a C program, one
function is always designated as the main function. A simple C program
looks like this:
main()
{
printf(“This is a simple C program.\n”);
}
Large C programs consist of multiple functions where each additional function
appears defined separate from the main function. In the following example,
the separate function is printme as follows:
main()
{
printme;
}
printme()
{
printf(“This is a simple C program.\n”);
}
In many programming languages, you can define a function inside another
function. However in C/C++, you can’t do this.
Oftentimes a C program needs to use a feature defined in a separate library,
so you may see programs that define a library to add, such as
#include
main()
{
printf(“This is a simple C program.\n”);
}
The structure of a typical C++ program looks similar. The following C++
example includes a C++ library called iostream and uses elements defined
in a standard C++ library called std:
#include
using namespace std;
int main ()
{
cout