TUTORIAL IN C PROGRAMING

Exercise 1: Write a C program which calculates the factorial of a given positive number (display

an error message if the number entered is negative and loop until the user enters a positive

number)

0! = 1, 1!= 1; 2!= 2*1; 3=3*2*1; 4= 4*3*2*1

Exercise 2: Write a C program to display the number of positive and negative numbers entered

by the user (the program stops when the user enters 0).

Exercise 3: Write a program which informs the user about the action to perform when he

enters the color of the traffic light (if the user press on 1(red), your program instructs him to

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Exercise 4: Write a function which gets a string as input and returns the reverse of that string

Exercise 5: Write a program that gets a string from the user, then use the previous function to

get the reverse of the string and verify if the string is a palindrome.

Exercise 6: Write a C program that reads N numbers and counts the number of positive

numbers and prints the average of all positive values.

Exercise 7: Write a C program that reads N numbers and sum all odd values between them.

Exercise 9: Write a C program to print 3 numbers in a line, starting from 1 and print n lines.

Accept number of lines (n, integer) from the user.

Test Data:

Input number of lines: 5

Expected Output :

1 2 3

4 5 6

7 8 9

Number of characters in a line: 6

Expected output:

1 2 3 4 5 6

7 8 9 10 11 12

13 14 15 16 17 18

19 20 21 22 23 24

25 26 27 28 29 30

Exercise 11: Write a C program to read an array of length 6 and find the smallest element and

its position.

Exercise 12: Implement the insertion sort alogarithm in C language.

Exercise 14: Write a C program to compute the perimeter and the area of a rectangle with a

height of 7 inches and width of 5 inches.

Expected Output:

Perimeter of the rectangle = 24 inches

Area of the rectangle = 35 square inches

Exercise 15: Write a C program to convert specified days into years, weeks and days.

Note: Ignore leap year

Test Data :

Number of days : 1329

Expected Output :

Input of the first integer: 25

Input of the second integer: 15

Expected Output:

Product of the above two integers = 375

Exercise 17: Write a C program to calculate a bike’s average consumption from the given total

distance (integer value) traveled (in km) and spent fuel (in liters, float number – 2 decimal

point).

Test Data :

Input total distance in km: 350

Input total fuel spent in liters: 5

Expected output:

There are:

H:M:S – 7:1:40

Exercise 19: Write a C program to read a password until it is correct. For the wrong password

print “Incorrect password” and for correct password print “Correct password” and quit the

program. The correct password is 1234.

Test Data:

Input password: 1234

Expected Output:

Correct password

Exercise 20: Create the following structures in C:

1. Create an array of 5 Restaurant (AR)

2. Create a menu M1(Rice), and you assign the 5 Restaurants to the list of restaurants of that

menu(LR)

Struct Restaurant {

Char[100] name;

Char [50] address:

Struct Customer{

Char[100] name;

Int account;

Restaurant R;

Menu M;

}

3. Create the second menu M2 (Eru) and you assign the 3 first Restaurants to the list of

restaurants of that menu (LR)

4. Create a customer with 5000f on his account, assign the last restaurant of AR (AR[0]) to the

customer and also the first menu (M1).

5. Display the list of Restaurants, the list of Menu and list of customers.

6. Save the list of restaurant in a file called restaurant.txt, Menu in menu.txt and Customers in