Skip to main content

A simple C program

Now lets start with a simplest C program in this post.
Read the program carefully and try to understand the meaning of each statement.

Sample Program:


/* Lets begin programming */

main()

{

printf("Hi people .This is our first C program \n");

}



Explaination of the above program:

Every C program must start with the main()function.
The ';' is used as a statement terminator in C.
{ } marks the beginning and the end of a function.
/* */ encloses comments if any.
printf() is a C function for displaying variable or constant.
\n is the escape sequence for new line.

I run this program on C blocks software and here is the Output:



Sounds easy,right?
Still any question post it to the comment box.I'll be happy to resolve them.

Comments

Unknown said…
I have a problem when i press ctrl+f9
I got an error Function 'print f' should have a prototype
and i cant open full screen compiler.
pls reply me
my id is vishalpatel1984@ymail.com

Popular posts from this blog

Turbo C++ for Windows 7 64 bit

 Its a very simple guide to install Turbo C++ on Windows 7 64 bit  operating system. Follow the steps below to install Turbo C++ compiler on your windows 7 ,64 bit operating system. Note - Please let me know whether the process is working for you or if you are getting some kind of error. Step 1) Install the software DOSBOX version 0.73(Search for it in the search bar). Step 2) Create a folder on your C drive, e.g.Turbo; (c:\Turbo\) Step 3) Extract TC into the created folder(e.g. c:\Turbo\);(you can search and download it) Step 4) Run the application DOSBOX 0.73,previously downloaded and installed. Step 5) Type the following commands at the command prompt that will appear, [z]: mount d c:\Turbo\ Following this you will get a message "Drive D is mounted as local directory c:\Turbo\" Step 6) Type d: to shift to d: Step 7) Then type commands mentioned below; cd tc cd bin tc or tc.exe Step 8) In the turbo C++ go to Options\Directories\ Chang

Calculating the average of two numbers using C++

Though this site aims at understanding C language, I am writing a program for you in C++, to have a general idea about C++ too. A program in C++,to calculate the average of two numbers, which are entered by the keyboard while the execution of the program. Try to understand the program; #include &lt iostream &gt using namespace std; int main() {     float num1,num2,average,sum;     cout << "Enter the first number:";     cin >> num1;     cout << "Enter the second number:";     cin >> num2;     sum=num1+num2;     average=sum/2;     cout << "The sum of the two numbers is:"<< sum<<"\n"<<"The average of the two numbers is:" << average; return(0); } Explaination: The new file header used here in this C++ program is the #include . By this , we are asking the preprocessor to add the contents of the iostream file to our program. The program is written in the

Finding the arithmetic operators

Below is a very simple program to find the arithmetic operator. Please feel free to put a comment if need an explanation. #include #include void main()   {     float a1,a2;     char operator;     printf("\n Enter the values of a1 operator a2\n");     scanf("%f%c%f",&a1,&operator,&a2);     switch(operator)      { case '+': printf("%.2f",a1+a2); break; case '-':  printf("%.2f",a1-a2);  break; case '*':  printf("%.2f",a1*a2); break; case '/':  if(a2==0)  printf("error\n");  else  printf("%.2f",a1/a2);  break; default: printf("unknown operatotr\n"); break;      }    }