AKTU PROGRAMING FOR PROBLEM SOLVING LAB ( ALL QUESTION )

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1. WAP that accepts the marks of 5 subjects and finds the sum and percentage marks obtained by the student.  

#include <stdio.h>
int main()
{
    int m, p, c, h, e;
    printf("Enter Math Marks: ");
    scanf("%d", &m);
    printf("Enter Physics Marks: ");
    scanf("%d", &p);
    printf("Enter Chemestry Marks: ");
    scanf("%d", &c);
    printf("Enter English Marks: ");
    scanf("%d", &e);
    printf("Enter Hindi Marks: ");
    scanf("%d", &h);
    int total = m + p + c + h + e;
    printf("Total Marks Obtained = %d", total);
    float avg = total / 5.00;
    printf("\nAverage of Marks = %.2f %%", avg);
    return 0;
}

 

2. WAP that calculates the Simple Interest and Compound Interest.

 The Principal, Amount, Rate of Interest and Time are entered through the keyboard.

#include <stdio.h>
#include <math.h>

int main() {
    int p, n,option;
    float r, t;
    printf("Enter the Principal amount: ");
    scanf("%d", &p);
    printf("Enter the Interest rate(%): ");
    scanf("%f", &r);
    printf("Enter the Time (years): ");
    scanf("%f", &t);
    printf("Enter the frequency: ");
    scanf("%d", &n);
    float CI = p * (pow((1 + r / (100.0 * n)), n * t) - 1);
    float SI = (p * r * t) / 100.0;
    float total_CI = p + CI;  // Total amount for CI
    float total_SI = p + SI;  // Total amount for SI
    printf("\nChoose Compound Interest (1) or Simple Interest (2): ");
    scanf("%d", &option);
    if (option == 1) {
        printf("Compound interest of %d Rs is %.2f Rs\n", p, CI);
        printf("Total Amount Payable is %.2f Rs\n", total_CI);
    } else if (option == 2) {
        printf("Simple interest of %d Rs is %.2f Rs\n", p, SI);
        printf("Total Amount Payable is %.2f Rs\n", total_SI);
    } else {
        printf("Invalid input! Try entering 'c' for Compound Interest or 's' for Simple Interest.\n");
    }
    return 0;
}

3. WAP to calculate the area and circumference of a circle.


#include <stdio.h>
int main()
{
    float pie = 22.0 / 7.0, r;
    printf("Enter radius(in meter): ");
    scanf("%f", &r);
    float circumference = 2 * pie * r;
    float area = pie * r * r;
    printf("The circle having radius %.2f has area = %.2f m² and circumference = %.2f m\n", r, area, circumference);
    return 0;
}

4. WAP that accepts the temperature in Centigrade and converts into Fahrenheit using the formula C/5=(F
32)/9.


#include <stdio.h>
int main()
{
    int f, c;
    printf("Enter temperature in deg Centigrade: ");
    scanf("%d", &c);
    f = (9.0 / 5.0 * c) + 32;
    printf("%d degC is equal to %d degF", c, f);
    return 0;
}
5. WAP that swaps values of two variables using a third variable.

#include <stdio.h>
int main()
{
    int a,b;
    printf("Enter number a =  ");
    scanf("%d",&a);
    printf("Enter number b =  ");
    scanf("%d",&b);
    int c = a;
    a = b;
    b = c;
    printf("a = %d, b = %d", a, b);
    return 0;
}

6. WAP that checks whether the two numbers entered by the user are
equal or not.


#include <stdio.h>
int main()
{
    int a, b;
    printf("Enter two numbers a & b: ");
    scanf("%d %d", &a, &b);
    if (a == b)
    {
        printf("Both Numbers are EQUAL");
    }
    else
    {
        printf("Both Numbers are NOT EQUAL");
    }
    return 0;
}

7. WAP to find the greatest of three numbers.

#include <stdio.h>
int main()
{
    int a, b, c;
    printf("Enter number a = ");
    scanf("%d", &a);
    printf("Enter number b = ");
    scanf("%d", &b);
    printf("Enter number c = ");
    scanf("%d", &c);
    if (a > b)
    {
        (a > c) ? printf("a is largest") : printf("c is largest");
    }
    else
    {
        (b > c) ? printf("b is largest") : printf("c is largest");
    }
    return 0;
}

8. WAP that finds whether a given number is even or odd.

#include <stdio.h>
int main()
{
    int a;
    printf("Enter a number: ");
    scanf("%d", &a);
    if (a % 2 == 0)
    {
        printf("Your number is EVEN");
    }
    else
    {
        printf("Your number is ODD");
    }
    return 0;
}


9. WAP that tells whether a given year is a leap year or not.


#include <stdio.h>
int main()
{
    int year;
    printf("Enter year: ");
    scanf("%d", &year);
    if (year % 4 == 0)
    {
        printf("%d is leap year.", year);
    }
    else
    {
        printf("%d is not a leap year.", year);
    }
    return 0;
}


10. WAP that accepts marks of five subjects and finds percentage
and prints grades according to the following criteria:
Between 90-100%--------------Print ‘A’
80-90%----------------------------Print ‘B’
60-80%---------------------------Print ‘C’
Below 60%----------------------Print ‘D’


#include <stdio.h>
int main()
{
    int m, p, c, h, e;
    printf("Enter Math Marks: ");
    scanf("%d", &m);
    printf("Enter Physics Marks: ");
    scanf("%d", &p);
    printf("Enter Chemestry Marks: ");
    scanf("%d", &c);
    printf("Enter English Marks: ");
    scanf("%d", &e);
    printf("Enter Hindi Marks: ");
    scanf("%d", &h);
    int total = m + p + c + h + e;
    float avg = total / 5.00;
    printf("\nPercentage Obtained = %.2f%% \n", avg);
    if (avg >= 90)
    {
        printf("You scored A grade.");
    }
    else if (avg >= 80)
    {
        printf("You scored B grade.");
    }
    else if (avg >= 60)
    {
        printf("You scored C grade.");
    }
    else
    {
        printf("You scored D grade.");
    }
    return 0;
}

11. WAP that takes two operands and one operator from the user and
perform the operation and prints the result by using Switch
statement.

#include <stdio.h>

int main()
{
    int a, b;
    char operator;
    printf("Enter a number a = ");
    scanf("%d", &a);
    printf("Enter a number b = ");
    scanf("%d", &b);
    getchar();
    printf("Enter the Operation(+,-,/,*) = ");
    scanf("%c", &operator);
    switch (operator)
    {
    case '+':
        printf("%d %c %d = %d", a, operator, b, a + b);
        break;
    case '-':
        printf("%d %c %d = %d", a, operator, b, a - b);
        break;
    case '*':
        printf("%d %c %d = %d", a, operator, b, a * b);
        break;
    case '/':
        printf("%d %c %d = %.2f", a, operator, b, (float)a / b);
        break;
    default:
        printf("Try to Enter(+,-,/,*)");
        break;
    }
    return 0;
}

12. WAP to print the sum of all numbers up to a
given number.


#include <stdio.h>

int main()
{
    int sum = 0,n;
    printf("Enter number: ");
    scanf("%d",&n);
    printf("the first %d natural number is\n",n);
    for (int i = 1; i <= n; i++)
    {
        printf("%d ",i);
        sum += i;
    }
    printf("\nThe sum of first %d natural number is %d",n,sum);
    return 0;
}

13. WAP to find the factorial of a given number.


#include<stdio.h>

int main () {
    int num,fac = 1;
    printf("Enter a num: ");
    scanf("%d",&num);
    for (int i = num; i > 0; i--)
    {
        fac *= i;
    }
    printf("Factorial of %d is %d",num,fac);
    return 0;
}

14. WAP to print sum of even and odd numbers

from 1 to N numbers.


#include <stdio.h>

int main()
{
    int num, evensum = 0, oddsum = 0;
    printf("Enter a number = ");
    scanf("%d", &num);
    for (int i = 1; i <= num; i++)
    {
        if(i % 2 == 0){
            evensum += i;
        }else{
            oddsum += i;
        }
    }
    printf("Sum of all odd numbers from 0 to %d is %d.",num,oddsum);
    printf("\nSum of all even numbers from 0 to %d is %d.",num,evensum);
    return 0;
}

15. WAP to print the Fibonacci series.

#include <stdio.h>

int main()
{
    int num, a = 0,b = 1,c;
    printf("Enter number of terms =  ");
    scanf("%d", &num);
printf("FIBONCCI Series up to %d term:-\n",num);
    for (int i = 0; i < num; i++)
    {
        printf("%d ",a);
        c = a + b;
        a = b;
        b = c;
    }
    return 0;
}

16. WAP to check whether the entered number
 is prime or not.


#include <stdio.h>

int main()
{
    int num, count = 0;
    printf("Enter a number =  ");
    scanf("%d", &num);
    for (int i = 1; i <= num; i++)
    {
        int r = num % i;
        if (r == 0)
        {
            count++;
        }
    }
    if (count > 2)
    {
        printf("%d is not a PRIME NUMBER", num);
    }
    else
    {
        printf("%d is a PRIME NUMBER", num);
    }
    return 0;
}


17. WAP to find the sum of digits of the
entered number.

#include<stdio.h>

int main () {
    int num,sum = 0;
    printf("Enter a num: ");
    scanf("%d",&num);
    for (int i = num; i > 0; i /= 10)
    {
        int r = i % 10;
        sum += r;
    }
    printf("Sum of digits of %d is %d",num,sum);
    return 0;
}

18. WAP to find the reverse of a number.


#include<stdio.h>

int main () {
    int num,rev = 0;
    printf("Enter a num: ");
    scanf("%d",&num);
    for (int i = num; i > 0; i /= 10)
    {
        int r = i % 10;
        rev = 10 * rev + r;
    }
    printf("Reverse of the %d is %d",num,rev);
    return 0;
}

19. WAP to print Armstrong numbers

from 1 to 1000.


#include <stdio.h>
#include <math.h>
int main()
{
printf("Armstrong number from 0 to 100 are:-\n");
    for (int num = 1; num <= 1000; num ++)
    {
        int count = 0, temp = 0, sum = 0;
        temp = num;
        while (temp > 0)
        {
            count++;
            temp /= 10;
        }
        temp = num;
        for (temp; temp > 0; temp /= 10)
        {
            int rem = temp % 10;
            sum += pow(rem, count);
        }
        if (sum == num)
        {
            printf("%d ", num);
        }
    }
    return 0;
}

20. WAP to convert binary number into

decimal number and vice versa.


#include <stdio.h>

int main()
{
    int binary = 0, rem = 0, base = 1, deci = 0, option;
    printf("Enter \"1\" for binary to decimal and \"2\" for decimal to binary: ");
    scanf("%d", &option);
    if (option == 1)
    {
        printf("Enter any binary number: ");
        scanf("%d", &binary);
        int temp = binary;
        while (temp > 0)
        {
            rem = temp % 10;
            deci += rem * base;
            base *= 2;
            temp /= 10;
        }
    }
    else
    {
        printf("Enter a number: ");
        scanf("%d", &deci);
        int temp = deci;
        while (temp > 0)
        {
            rem = temp % 2;
            binary += rem * base;
            base *= 10;
            temp /= 2;
        }
    }
    printf("Decimal number %d is equal to %d Binary number.", deci,binary);
    return 0;
}


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