[SOLVED] IT1010 Tutorial 8

Question 1

Show the value of x after each of the following statements is performed:

7. x = floor(7.5) ii. x = ceil (0.0)  iii. x = ceil (-6.4)  iv. x = log10(100.0)
8. x = ceil (floor (-5.5))

Question 2

Write a function called   circleArea()   that  take  the  radius  of  a  circle  as  an  argument  and  calculate and return the area.  In the main program read the radius value from the user, call circleArea()  and display the result.

Question 3

Write three functions do the following  add –  add two integers pass as parameters and return the result multiply – multiply two integers pass as parameters and return the result  square – receive an integer as a parameter and return the result after multiplying the number by itself.

Use these functions in the main program to calculate the result of the following mathematical expression.   (3*4 + 5*7) ²

Additional Exercises

Question 1

1. i) Write a function that displays a solid square of asterisks whose side is specified in integer parameter side_. For example, if side is 4, the function displays

****

****

****

****

1. ii) Modify the function created in i) above to form the square out of the character contained in character parameter fillCharacter. Thus if side is 3 and fillCharacter

is “#”, then this function should print

            ### ### ###

Question 2

The roots of a function can be calculated as given below.

Write a C program to input any three values for a, b, c and to calculate the roots.

Hint : Use pow and sqrt function in math library.

Question 3

You are asked to write a C program to calculate the final mark and grade of 5 students for a subject.

1. Write a function called calcFinalMark() to calculate the final mark of the subject. When calculating the final mark, 30% is taken from the assignment mark and 70% is taken from the paper mark. Function should return the final mark. Assignment mark and paper mark are given as parameters to the functions.

float calcFinalMark(float assignmentMark, float paperMark);

1. Write a function called findGrades() to return the grade obtained for the given final mark. Grades are calculated as follows:

char findGrades(float finalMark);

1. Write a function called printDetails() to print the name, final mark and the grade of a student.

Your output should be as follows:

Name         Final Mark     Grade

——–        ————–     ——–

. . . . . .        . . . . . . . . .      . . . . . .

void printDetails(char name[],float assignmentMark, float paperMark);

1. In your main function, ask the user to enter the name, assignment marks (out of 100) and the paper mark(out of 100) of the 5 students from the keyboard. Allow the user to enter the paper mark only if the student has got more than 50% for the assignment mark. If not the paper mark is considered as zero. Display the name, final mark and the grade of a student using the function written in section c).