or
Close Menu

5 Computer -- Programming II

Define functions. Write the advantages of function with program example.

Define functions. Write the advantages of function with program example.

1 Answers

1088 Views

A function is basically a block of statements that performs a particular task. Suppose a task needs to be performed continuously on many data at different points of time, like one at the beginning of the program and one at the end of the program, so instead of writing the same piece of code twice, a person can simply write it in a function and call it twice. And after the execution of any function block, the control always comes back to the main() function.

Here are several advantages of using functions in your code:

  • Use of functions enhances the readability of a program. A big code is always difficult to read. Breaking the code in smaller Functions keeps the program organized, easy to understand and makes it reusable.
  • The C compiler follows top-to-down execution, so the control flow can be easily managed in case of functions. The control will always come back to the main() function.
  • It reduces the complexity of a program and gives it a modular structure.
  • In case we need to test only a particular part of the program we will have to run the whole program and figure out the errors which can be quite a complex process. Another advantage here is that functions can be individually tested which is more convenient than the above mentioned process.
  • A function can be used to create our own header file which can be used in any number of programs i.e. the reusability.



For eg:

In the following program, the function can be called / reused many times instead of having to write the same codes again and again.

#include<stdio.h> int sum(int,int); // function prototype int main() { int a,b,s; printf("Enter two integers:"); scanf("%d%d",&a,&b); s=sum(a,b); // fucntion call printf("Sum = %d",s); return 0; } int sum(int x,int y) // function definition { return (x+y); // return statement }


More questions on Programming II

1) Introduction2) Notes on approaches in problem solving (top down design and bottom up design)3) Phases on Programming (problem identification, derive steps for solution (algorithm, flowchart), co...

Define operators. Explain types of operators.

Operators can be defined as basic symbols that help us work on logical and mathematical operations.Operators in C and C++, are tools or symbols that are used to perform mathematical operations concerning arithmetic, logical, conditional and, bitwise operations.


1. ArithmeticOperators

It includes basic arithmetic operations like addition, subtraction, multiplication, division, modulus operations, increment, and decrement.

The Arithmetic Operators in C and C++ include:

  1. + (Addition)– This operator...

Define data types. Explain different data types used in C.

A data type specifies the type of data that a variable can store such as integer, floating, character, etc.


There are the following data types in C language.

TypesData Types
Basic Data Type int, char, float, double
Derived Data Type array, pointer, structure, union
Enumeration Data Type enum
Void Data Type void
Basic Data Types

The basic data types are integer-based and floating-point based. C language supports both signed and unsigned literals.

The memory size of the basic data types...

Define control structure. Explain different types of control structure.

Control Structuresare just a way to specify flow of control in programs. Any algorithm or program can be more clear and understood if they use self-contained modules called as logic or control structures. It basically analyzes and chooses in which direction a program flows based on certain parameters or conditions.


  1. Sequential Logic (Sequential Flow)

    Sequential logic as the name suggests follows a serial or sequential flow in which the flow depends on the series of instructions given to the...

Differentiate between for loop and while loop with program example.

For loop is used when number of iteration is known. eg :

``` for (int i=0;i<n;i++){

}

```

Incase if while loop , it runs till the condition is true. eg:

```

while(n>0){

}

```

Differentiate between entry control loop and exit control loop with program example.

Define pointer. Write the advantages of pointers with program example.

Differentiate between structure and union.

Structures in Cis a user-defined data type available in C that allows to combining of data items of different kinds. Structures are used to represent a record.

Defining a structure:To define astructure, you must use thestructstatement. The struct statement defines a newdata type, with more than or equal to one member. The format of the struct statement is as follows:

struct [structure name] { member definition; member definition; ... member definition; }; (OR) struct [structure name] { member...

Explain any five strings handling function with program example.

Write short notes on: Array and Recursive function.

Write a C program to generate Fibonacci series. [0,1,1,2, 3, 5, 8...10th term]

#include<stdio.h>

int main()

{

int a=0;

int b=1;

printf("%d %d ",a,b);

for(int i=0;i<10;i++)

{

int c=a+b;

a=b;

b=c;

printf("%d ",c);

}

}




Output:

0 1 1 2 3 5 8 13 21 34 55 89

Write a C program to input a number and check whether it is odd or even.

#include<stdio.h>

void check(int);

int main()

{

int n;

printf("enter the number ");

scanf("%d",&n);

check(n);

}

void check(int n)

{

if(n%2==0)

{

printf("%d is even number",n);

}

else{

printf("%d is not even number",n);

}

}


Output:

enter the number 7

7 is not even number

Write a C program to input a number and check whether it is exactly divisible by 5 but not by 7.

Note cs50 library is used here.

#include<stdio.h>#include<cs50.h>
int main(void){ int n = get_int("Enter any number: "); if (n % 5 == 0 && n % 7 == 0) { printf("It is divisible by both 5 and 7.\n"); } else if (n % 5 == 0 && n % 7 != 0) { printf("It is divisible by 5 but not by 7.\n"); } else if (n % 5 != 0 && n % 7 == 0) { printf("It is divisble by 7 but not by 5.\n"); } else { printf("It is not divisble by both 7 and 5.\n"); }}

Write a C program to input a number and print multiplication table of given number.

OUTPUT:

enter the number which u want to get multiplication table 3

Multiplication table is

3 * 1 = 3

3 * 2 = 6

3 * 3 = 9

3 * 4 = 12

3 * 5 = 15

3 * 6 = 18

3 * 7 = 21

3 * 8 = 24

3 * 9 = 27

3 * 10 = 30


#include<stdio.h>

void multiply(int);

int main()

{

int n;

printf("enter the number which u want to get multiplication table ");

scanf("%d",&n);

multiply(n);

}

void multiply(int n)

{

int results;

printf("Multiplication table is\n");

for(int i=1;i<=10;i++)

{

results=n*i;

printf("%d * %d = %d\...

Write a C program to find greatest number among three numbers.

OUPUT:

enter three number 3 4 5

5 is greater than 3 and 4



#include<stdio.h>

void check(int,int,int);

int main()

{

int a,b,c;

printf("enter three number ");

scanf("%d%d%d",&a,&b,&c);

check(a,b,c);

}

void check(int a,int b,int c)

{

if(a>b&&a>c)

{

printf("%d is greater than %d and %d",a,b,c);

}else if(b>c&&b>a)

{

printf("%d is greater than %d and %d",b,c,a);

}

else

{

printf("%d is greater than %d and %d",c,a,b);

...

Write a C program to calculate sum of n natural number.

OUPUT:

enter the number 4

The sum of n natural numbers is 10


PROGRAMS:

#include<stdio.h>

int sum(int);

int main()

{

int n;

printf("enter the number ");

scanf("%d",&n);

int c=sum(n);

printf("The sum of n natural numbers is %d ",c);

}

int sum(int n)

{

int d=n*(n+1)/2;

return d;

}

Write a C program to reverse a given number.

OUPUT:

enter the number 21334

The reverse of number is 43312


PROGRAMS:

#include<stdio.h>

int sum(int);

int main()

{

int n;

printf("enter the number ");

scanf("%d",&n);

int c=sum(n);

printf("The reverse of number is %d ",c);

}

int sum(int n)

{

int r,rev=0;

while(n!=0)

{

r=n%10;

rev=rev*10+r;

n=n/10;

}

return rev;

}

Write a C program to check whether given string is palindrome or not.

Write a C program to count total vowels from given string.

Write a C program to calculate factorial of a given number using recursive function.

OUPUT:

Enter any number 6

factorial is 720


PROGRAMS:

#include<stdio.h>

int fact (int);

int main()

{

int n,f;

printf("Enter any number ");

scanf("%d",&n);

f = fact(n);

printf("factorial is %d",f);

return 0;

}

int fact (int n)

{

if (n<=1)

return 1;

else

return (n*fact(n-1));

}


Write a C program to arrange 10 numbers in ascending order.

#include <stdio.h>


int main() {

int a[10], i, j, temp;

printf("Enter 10 numbers:\n");

for (i = 0; i < 10; i++) {

scanf("%d", &a[i]);

}

for (i = 0; i < 9; i++) {

for (j = i+1; j < 10; j++) {

if (a[i] > a[j]) {

temp = a[i];

arr[i] = a[j];

a[j] = temp;

}

}

}

printf("Numbers in ascending order:\n");

for (i = 0; i < 10; i++) {

printf("%d ", a[i]);

}

return 0;

}


Write a C program to read salary of 300 employees and count the number of employee getting salary between 30000 to 50000.

Write a C program to read two 3x3 matrices and perform matrix addition/multiplication.

#include <stdio.h>

int main()

{

int a[3][3], b[3][3], c[3][3];

int i, j, k, choice;


printf("Enter the elements of first matrix:\n");

for (i = 0; i < 3; i++) {

for (j = 0; j < 3; j++) {

scanf("%d", &a[i][j]);

}

}


printf("Enter the elements of second matrix:\n");

for (i = 0; i < 3; i++) {

for (j = 0; j < 3; j++) {

scanf("%d", &b[i][j]);

}

}


printf("Enter your choice:\n");

printf("1. Addition\n");

printf("2. Multiplication\n");

...

Write a C program to enter name, roll number and percentage of 10 students and store them in a data file [use any name].

#include <stdio.h>


struct student {

char name[50];

int rollno;

float percentage;

};


int main() {

struct student s[10];

int i;

printf("Enter details of 10 students:\n");

for (i = 0; i < 10; i++) {

printf("\nStudent %d:\n", i+1);

printf("Name: ");

scanf("%s", s[i].name);

printf("Roll Number: ");

scanf("%d", &s[i].rollno);

printf("Percentage: ");

scanf("%f", &s[i].percentage);

}

// Open the file for writing

FILE *fp;

fp = fopen("students.dat",...

A datafile “patient.txt” contain name, disease , age and bed number of few patient. Write a C program to read and display records of all patients in appropriate format.

A datafile “patient.txt” contain name, disease , age and bed number of few patients. Write a C program to read and display only records of patients suffering from “COVID”.

Write a C program to enter book name, book id and book author of few books and store them in a data file named “library.txt”. Display each records in screen in appropriate format.

Define recursion. Write a C program to calculate factorial of a given number using recursion.


Recursion in C is a process where a function calls itself as a subroutine in order to solve a particular problem. In this process, the function repeats itself with different arguments until a specific termination condition.

OUPUT:

Enter any number 6

factorial is 720


PROGRAMS:

#include<stdio.h>

int fact (int);

int main()

{

int n,f;

printf("Enter any number ");

scanf("%d",&n);

f = fact(n);

printf("factorial is %d",f);

return 0;

}

int fact (int n)

{

if (n<=1)

return 1;

else

...

Define function. Write a C program to calculate sum of two numbers using user-defined function.


A function in C is a block of code that performs a specific task. It is a reusable code module that can be called by other parts of a program. Functions help in modular programming, where complex programs are divided into smaller, simpler parts that can be easily understood and maintained.


OUPUT:

enter two number 4 5

the sum of two numbers is 9


PROGRAMS:

#include<stdio.h>

int sum(int*,int*);

int main()

{

int a,b;

printf("enter two number ");

scanf("%d%d",&a,&b);

int...

Write a C program to create a user-defined function to calculate area of a rectangle.

Define pointer. Write its advantages with program example.

Define function in C. Explain its type with program example.

Why do we use structure? Write a C program using structure to input name, age and salary of few employees and display it.


Structures in C are used to group together related data of different data types into a single user-defined data type. They provide a way to organize and represent complex data structures in a more manageable way.



OUPUT:

Enter the number of records u wanted to get 3

Enter the name, age and salary

Aadarsh 17 92382

Enter the name, age and salary

Bhagat 17 2872302

Enter the name, age and salary

Vision 17 8293202

Name is Aadarsh

Age is 17

Salary is 92382

Name is Bhagat

Age is 17

Salary is 2872302

Name is Vision

...

Write a C program to enter the name, mobile and post of few employees and write it in file "worker.dat".

Write a C program to read all the name, mobile and post of few employees from data file "worker.dat" and display in appropriate format.

Write a C program to store name, age and address  of few student in data file "record.dat" and also display it in appropriate format.

Close Open App