Let Us C Chapter 3 and 4 Problems

Note-Please Attempt problem from your own first.Otherwise click on the link question to get the solution.

Chapter 3  Problem [B][a]

Write a program to calculate overtime pay of 10 employees.Overtime is paid at the rate of Rs. 12.00 per hour for everyhour worked above 40 hours. Assume that employees do notwork for fractional part of an hour.

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Chapter 3 Problem [B][b]

Write a program to find the factorial value of any numberentered through the keyboard.

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Chapter 3 problem [B][c]

Two numbers are entered through the keyboard. Write aprogram to find the value of one number raised to the powerof another.

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Chapter 3 Problem [B][d]

Write a program to print all the ASCII values and their

equivalent characters using a while loop. The ASCII values

vary from 0 to 255.

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Chapter 3 Problem [B][e]

Write a program to print out all Armstrong numbers between 1 and 500. If sum of cubes of each digit of the number is equal to the number itself, then the number is called an Armstrong number. For example, 153 = ( 1 * 1 * 1 ) + ( 5 * 5 * 5 ) + ( 3 * 3 * 3 )

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Chapter 3 Problem [B][f]

Write a program for a matchstick game being played between the computer and a user. Your program should ensure that the computer always wins. Rules for the game are as follows:

− There are 21 matchsticks.

− The computer asks the player to pick 1, 2, 3, or 4 matchsticks.

− After the person picks, the computer does its picking.

− Whoever is forced to pick up the last matchstick loses the game.

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Chapter 3 Problem [B][g]

Question-Write a program to enter the numbers till the user wants and at the end it should display the count of positive, negative and zeros entered.

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Chapter 3 Problem [E][a]

Write a program to print all prime numbers from 1 to 300. (Hint: Use nested loops, break and continue)

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Chapter 3  Problem[E][b]

Write a program to fill the entire screen with a smiling face. The smiling face has an ASCII value 1.

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Chapter 3  Problem [E][c]

Write a program to add first seven terms of the followingseries using a for loop:1/1! + 2/2! + 3/3!……

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Chapter 3  Problem [E][d]

Write a program to generate all combinations of 1, 2 and 3 using for loop.

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Chapter 3 Problem [E][e]

According to a study, the approximate level of intelligence of a person can be calculated using the following formula:i = 2 + ( y + 0.5 x ) Write a program, which will produce a table of values of i, y and x, where y varies from 1 to 6, and, for each value of y, x varies from 5.5 to 12.5 in steps of 0.5.

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Chapter 3 Problem [E][g]

Question-Write a program to fill the entire screen with diamond and
heart alternatively. The ASCII value for heart is 3 and that ofdiamond is 4.

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Chapter 3  Problem [E][h]

Write a program to print the multiplication table of thenumber entered by the user. The table should get displayed inthe following form.29 * 1 = 29

29 * 2 = 58

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Chapter 3 Problem [E][i]

When interest compounds qtimes per year at an annual rate of r % for n years, the principle p compounds to an amount a as perthe following formula a = p ( 1 + r / q ) ^nqWrite a program to read 10 sets of p,r, n& q and calculate the corresponding as. 

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Chapter 3 Solutions Problem [E][m]

Question-The natural logarithm can be approximated by the following series.  If  x is input through  the keyboard, write a  program to calculate the sum of first seven terms of this series.

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Chapter 3 problem [E][f]

Write a program to produce the following output:

 A B C D E F G F E D C B A

 A B C D E F     F E D C B A

 A B C D E            E D C B A 

 A B C D                  D C B A 

 A B C                         C B A 

 A B                                B A

 A                                       A 

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Chapter 3  problem[E][i]

 Write a program to produce the following output:      

         1     

      2    3   

   4    5    6 

7    8    9    10

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Chapter 4 Problem[C]

Write a menu driven program which has following options: 1. Factorial of a number. 2. Prime or not 3. Odd or even 4. Exit 

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Chapter 4 Page 148 optional problem

Write the program without using goto , check page no. 159.

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Chapter 4 solutions Problem [D]

Question-Write a program which to find the grace marks for a student using switch. The user should enter the class obtained by the student and the number of subjects he has failed in.

 −  If the student gets first class and the number of subjects he failed in is greater than 3, then he does not get any grace. If the number of subjects he failed in is less than or equal to 3 then the grace is of 5 marks per subject.

 −  If the student gets second class and the number of subjects he failed in is greater

 −  If the student gets third class and the number of subjects he failed in is greater than 1, then he does not get any grace. If the number of subjects he failed in is equal to 1 then the grace is of 5 marks per subject 

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