C program to ring a bell.

This program will play a beep sound.

 

#include<stdio.h>
int main()
{
  //following printf will ring a beep sound 3 times.

  printf("\a \a \a");
           
  //Note: Here \a stands for Alert
  //Each \a will ring a one beep sound

  return 0;         
}

Output of Program:

You will listen a beep sound. 

You may also like to learn following programs: Use of XOR operations on two numbers using C program. C program to ring a bell. Use of Time (Sleep) function in C program. C program to separate words (tokens) from a given string. C program to count spaces in a given string. C program to print ASCII values and its corresponding character. C program to print memory addresses of an array elements. Changing(swapping) value of two variables without use of third variable. Use of MODULUS (%) operator to find odd or even number. C program to validate user input. C program to print memory occupied by int, float and char variables. Storing New Line character (\n) as a user input data. C program to use Arrow keys. C program to delete a given file. Printing Box using ASCII values.

C program to read and print your name and address.

C program to read and print your name and address.

#include<stdio.h>
#include<string.h>
int main()
{
  char name[20], address[80];
  printf("Enter your name:");
  gets(name);
  printf("Enter your address:");
  gets(address);

  printf("=====================\n");
  printf("Your name: %s \n",name);
  printf("Your address: %s\n", address);
  printf("=====================\n");

  return 0;
}

Output of the Program

Enter your name:ABC PATEL
Enter your address:11-PQR Society, Ahmedabad, India.
=====================
Your name: ABC PATEL
Your address: 11-PQR Society, Ahmedabad, India.
=====================

C program to print your name and address(Static program).

C program to print your name and address(Static program). #include<stdio.h> int main() {             printf("Name: ABC PATEL \n");             printf("Address: 11-PQR Society, Nr. Bank \n");             printf("Ahmedabad, Gujarat, India.");             return 0; }

Output of the Program

Name: ABC PATEL

Address: 11-PQR Society, Nr. Bank

Ahmedabad, Gujarat, India.

Rules for defining Variable Name in C language

In C language any user defined name is called identifier. This name may be variable name, function name, goto label name, any other data type name like structure, union, enum names or typedef name.

We need to follow following rules while declaring variables (identifiers) in C program.

Rule 1:  Name of identifier includes alphabets, digit and underscore.

Example of Valid variable name: india, add12, total_of_number etc.

Example of Invalid variable name: show*marks, factorial#, avg value etc.

Rule 2: First character of any identifier must be either alphabets or underscore.

Valid name:  _total, _3, a_,   etc.

Invalid name: 3_, 10_function, 12345 etc.

Rule 3: Name of identifier cannot be any keyword of c program.

Invalid name: int, float, char, if, else, for, switch, etc

Rule 4: Name of identifier is case sensitive i.e. num and Num are two different variables.

Rule 5: Only first 31 characters are significant of   identifier name.

Example:

abcdefghijklmnopqrstuvwxyz123456aaa, 

abcdefghijklmnopqrstuvwxyz123456bbb, 

abcdefghijklmnopqrstuvwxyz123456cad

All three identifier name are same because only first 31 characters has meaning. Rest has not any importance.

Rule 6: Must not contain white space.

Valid name: MyMarks

Invalid name: My Marks

* * * * *

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C Program to print A to Z using for loop.

#include<stdio.h>

int main()

{

 int i;

 for(i=65; i<=90; i++)

 {

  printf("%c ",i);

 }

 return 0;

}

Output of the program:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

C Program to print series 10 20 30 40 50 ... N

C Program to print series 10 20 30 40 50 ... N for the given value of N.

For example, if N=5, output should be

10 20 30 40 50

#include<stdio.h>

void main()

{

 int i, N;

 printf("Enter N:");

 scanf("%d", &N);

 for(i=1; i<=N; i++)

 {

     printf("%d ",i*10);

 }

}

Output of program

Enter N:5

10 20 30 40 50

C program to print Even number series 2 4 6 8 ... N.

C Program to print Even number series 2 4 6 8 ... N for the given value of N.

For example, if N=10, output should be
2 4 6 8 10

Program Code

#include<stdio.h>
int main()
{
  int i, N;
  printf("Enter N:");
  scanf("%d", &N);

  for(i=2; i<=N; i=i+2)
  {
    printf("%d ",i);
  }
  return 0;
}

Program Code

Enter N:10
2 4 6 8 10

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