Day 3 : Questions list

Simple if, if-else, nested if-else and else-if ladder

Take two int values from user and print greatest among them using if/else and ternary operator.

#include <stdio.h>

int main()
{
    int num1, num2;
    printf("Enter num1\n");
    scanf("%d", &num1);
    printf("Enter num2\n");
    scanf("%d", &num2);
    printf("Using if else : \n");
    if (num1 > num2)
    {
        printf("%d is greater number\n",num1);
    }
    else
    {
        printf("%d is greater number\n",num2);
    }

    // Ternary operator
    printf("Using ternary operator : \n");
    (num1 > num2) ? printf("%d is greater number\n",num1) : printf("%d is greater number\n",num2);
    return 0;
}

Take values of length and breadth of a rectangle from user and check if it is square or not.

#include <stdio.h>

int main()
{
    int length, breadth;
    printf("Enter length\n");
    scanf("%d", &length);
    printf("Enter breadth\n");
    scanf("%d", &breadth);
    if (length == breadth)
    {
        printf("It is a square\n");
    }
    else
    {
        printf("It is a rectangle\n");
    }
    return 0;
}

A shop will give discount of 10% if the cost of purchased quantity is more than 1000. Ask user for quantity Suppose, one unit will cost 100. Judge and print total cost for user.

#include <stdio.h>

int main()
{
    int quantity, price, discount;
    printf("Enter quantity\n");
    scanf("%d", &quantity);
    price = quantity * 100;
    if (price > 1000) {
        discount = price * 0.1;
        printf("Total cost is %d\n", price - discount);
    }
    else {
        printf("Total cost is %d\n", price);
    }
    return 0;
}

/*
Output :
Enter quantity
20
if Total cost is 1800
*/

A company decided to give bonus of 5% to employee if his/her year of service is more than 5 years. Ask user for their salary and year of service and print the net bonus amount.

A school has following rules for grading system:
a. Below 25 – F
b. 25 to 45 – E
c. 45 to 50 – D
d. 50 to 60 – C
e. 60 to 80 – B
f. Above 80 – A
Ask user to enter marks and print the corresponding grade.

#include <stdio.h>

int main()
{
    int marks;
    printf("Enter marks\n");
    scanf("%d", &marks);
    if (marks < 25){
        printf("F\n");
    }
    else if(marks >=25 && marks <45){
        printf("E\n");
    }
    else if(marks >=45 && marks <50){
        printf("D\n");
    }
    else if(marks >=50 && marks <60){
        printf("C\n");
    }
    else if(marks >=60 && marks <80){
        printf("B\n");
    }
    else if(marks >=80 && marks <100){
        printf("A\n");
    }
    else{
        printf("Invalid marks\n");
    }
    return 0;
}

/*
Output :

Enter marks
65
B

Enter marks
30
E

Enter marks
20
F
*/

Take input of age of 3 people by user and determine oldest and youngest among them.

A student will not be allowed to sit in exam if his/her attendence is less than 75%.
Take following input from user
Number of classes held
Number of classes attended.
And print
percentage of class attended
Is student is allowed to sit in exam or not.

A student will not be allowed to sit in exam if his/her attendence is less than 75%.
Take following input from user
Number of classes held
Number of classes attended.
And print
percentage of class attended
Is student is allowed to sit in exam or not.
Modify this question to allow student to sit if he/she has medical cause. Ask user if he/she has medical cause or not ( ‘Y’ or ‘N’ ) and print accordingly.

Write a program to check whether a entered character is lowercase ( a to z ) or uppercase ( A to Z ).

If
x = 2
y = 5
z = 0
then find values of the following expressions:
a. x == 2
b. x != 5
c. x != 5 && y >= 5
d. z != 0 || x == 2
e. !(y < 10)

Write a program to print absolute vlaue of a number entered by user.

#include <stdio.h>

int main()
{
    int x;
    printf("Enter a number\n");
    scanf("%d", &x);
    if (x < 0)
    {
        x = x * (-1);
    }
    printf("Absolute value is %d\n", x);
    return 0;
}

/*
Output :

Enter a number
2
Absolute value is 2

Enter a number
-2
Absolute value is 2
*/

C program to check Leap Year

Simple if, if-else, nested if-else and else-if ladder

List of switch case programming exercises

Programs on loops

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Simple if, if-else, nested if-else and else-if ladder

List of switch case programming exercises

Programs on loops

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