Assignment 2 PPS

 Assignment 2

Problem 1: Write a program in C that accepts the marks of 5 subjects and finds the sum and percentage marks obtained by the student.

sol.    

#include<stdio.h>

#include<math.h>

float main()

{

float Maths,Programming,Ecology,Physics,Graphics,Percentage,Sum;

    printf("Maths=");

    scanf("%f",&Maths);

printf("Programming=");

scanf("%f",&Programming);

        printf("Ecology=");

    scanf("%f",&Ecology);

printf("Physics=");

scanf("%f",&Physics);

    printf("Graphics=");

    scanf("%f",&Graphics);

Sum=Maths+Programming+Ecology+Physics+Graphics;

Percentage= (Sum/500)*100;

    printf("Sum=%f\nPercentage=%f",Sum ,Percentage);

return 0;

}

Problem 2: Write a program in C that calculates the Simple Interest and Compound Interest. The Principal Amount, Rate of Interest and Time are entered through the keyboard.

sol. 

#include<stdio.h>

#include<math.h>

float main()

{

    float principal,rate,time,compound,simple;

printf("The Principal = ");

scanf("%f",&principal);

printf("Rate of Interest = ");

scanf("%f",&rate);

printf("Time = ");

scanf("%f",&time);

//simple interest formula code

    simple=(principal*rate*time)/100;

    printf("Simple Interst is %f \n",simple);

    //compound interest formula code

    compound=((pow((rate/100+1),time))-1)*principal;

    printf("Compound Interst is %f",compound);

    return 0;

 }

Problem 3: Write a program in C to calculate the area and circumference of a circle..

sol.

#include<stdio.h>

#include<math.h>

float main( )

{

float radius, area, circumference;

printf("enter the radius of the circle: ");

scanf("%f", &radius);

//code for area of circle.

area=3.14*pow(radius,2);

printf("The area of the circle is: %f sqaure units\n", area);

//code for circumference of the circle.

circumference=2*3.14*radius;

printf("The circumference of the circle is: %f \n", circumference);

return 0;

}

Problem 4: Write a program in C that accepts the temperature in Centigrade and converts into Fahrenheit using the formula, C/5=(F-32)/9.

sol.

#include<stdio.h>

int main( ) {

    float celsius, fahrenheit;

    printf("Enter temperature in Celsius: ");

    scanf("%f", &celsius);

    // Convert Celsius to Fahrenheit using the formula C/5=(F-32)/9

    fahrenheit = (celsius * 9/5) + 32;

    printf("Temperature in Fahrenheit: %.2f\n", fahrenheit);

    return 0;

}

Problem 5: Write a program in C that swaps values of two variables using a third variable.

sol.

#include <stdio.h>

int main() 

{

    int first, second, temp;

    printf("Enter the first variable: ");

    scanf("%d", &first);

    printf("Enter the second variable: ");

    scanf("%d", &second);

    // Swap the values using a third variable

    temp = first;

    first = second;

    second = temp;

    printf("After swapping:\n");

    printf("First variable: %d\n", first);

    printf("Second variable: %d\n", second);

    return 0;

}