Basic C Programming Questions

Basic Coding Questions:

Exercise 1:

Q1. Write a programme to calculate area and perimeter of rectangle by accepting its length and breadth.

Ans:

#include<stdio.h>

#include<conio.h>

void main()

{

float a,p,l,b;

clrscr();

printf("\n enter the length and breadth of rectangle");

scanf("%f%f",&l,&b);

a=l*b;

p=2*(l+b);

printf("\n the area of rectangle is %f and the perimeter is %f",a,p);

getch();

}

The above image code is written in code blocks

Output:

enter the length and breadth of rectangle

20(press enter)

10(press enter)

the area of rectangle is 200 and the perimeter is 60

Explanation of the above code:

• Declaring of variables in data type float since length and breadth cannot always be integers.
• Taking input of length and breadth together by using scanf function.
• Substituting the values of length and breadth stored in l and b to find out area and perimeter.
• Displaying the result.

Q2. Write a programme to calculate average of 5 numbers by taking input from user.

Ans:

#include<stido.h>

#include<conio.h>

void main()

{

float n1,n2,n3,n4,n5,avg;

clrscr();

printf("\n enter the five numbers");

scanf("%f%f%f%f%f",&n1,&n2,&n3,&n4,&n5);

avg=(n1+n2+n3+n4+n5)/5;

printf("\n the average of five numbers is %f",avg);

getch();

}

Output:

enter the five numbers

10(press enter)

20(press enter)

30(press enter)

40(press enter)

50(press enter)

the average of five numbers is 30

Explanation of the above code:

• Declaring of the variables in data type float since average can be decimals.
• Scanning all five numbers from user together by using format specifier %f .
• Substituting of all five numbers in average formula .
• Displaying the result.

Q3. Write a programme to convert the inches into centimetres.

Ans:

#include<stdio.h>

#include<conio.h>

void main()

{

float inch,cm;

clrscr();

printf("\n enter the length in inches");

scanf("%f",&inch);

cm=2.54*inch;

printf("\n the length in centimetres is %f",cm);

getch();

}

Output:

enter the length in inches

2(press enter)

the length in centimetres is 5.08

Explanation:

• Declaring of variables in data type float since length cannot always be an integer.
• Taking the input in inches from the user.
• Substituting the length in formula ( 1 inch = 2.54 cm).
• Displaying the result.

Conclusion:

Thus now we know how some functions work in software and how to take multiple inputs and display multiple values in the same output.

To learn Basics of C Programming, click on link provided below: 

https://www.codingninjaa.com/2020/05/how-to-learn-coding-for-beginners.html

Thanking You.

Hope You Had A Great Time!