Accept a character and print previous and next character

       
/*
Accept character of a keyboard and print is previous and next
character.
*/

#include<stdio.h>
main()

{
    char ch,ch1,ch2;

    printf("Enter a character- ");
    scanf("%c",&ch);

    ch1= ch-1;
    ch2= ch+1;

    printf("\nThe previous character is %c.\n",ch1);
    printf("The nextcharacter is %c.\n",ch2);

}




Find Net Salary of an Employee

 

       
/*
The basic salary of an employee is decided at the time of employment. 
Apart from the basic salary; employee gets 10% of basic as have rent
30% basic as D.A. A professional tax as 5% at basic is deducted from 
salary. Accept employee id and basic salary of employee % find net
salary.
*/

#include<stdio.h>
main()

{
    int b;
    float t;

    printf("Enter b- ");
    scanf("%d",&b);

    t=b+(0.1)*b+(0.3)*b-(0.05)*b;

    printf(" Net Salary=%f",t);
}




Accept x and y coordinates of two points and find the distance between two points

  

       
/*
Accept x and y coordinates of two points and find the distance
between two points.
*/

#include<stdio.h>
main()

{
    int x1,y1,x2,y2;
    float d;

    printf("Enter x1,y1,x2,y2- ");
    scanf("%d%d%d%d",&x1,&y1,&x2,&y2);

    d=sqrt(((x2-x1)*(x2-x1))+((y2-y1)*(y2-y1)));

    printf(" Distance=%f",d);
}




Accept dimensions of a triangle & print area and perimeter of the triangle

 

       
/*
Accept dimensions of a triangle & print area and perimeter of 
the triangle.
*/

#include<stdio.h>
main()

{
    int a,b,c;
    float P,S,A;

    printf("Enter a, b, c - ");
    scanf("%d%d%d",&a,&b,&c);

    P=a+b+c;

    printf("Perimeter = %f",P);
    S=P/2;
    A=sqrt((S-a)*(S-b)*(S-c));

    printf(" Area=%f",A);
}




Accept two numbers and print the arithmetic mean and harmonic mean

 
 
       

#include<stdio.h>
main()
{
    int a,b;
    float A,H;
    printf("Enter a, b: ");
    scanf("%d%d",&a,&b);
    A = (a+b)*0.5;
    printf("Arithmetic Mean = %f\n",A);
    H = ((float)(a*b))/((float)(a+b));
    printf("Harmonic Mean = %f\n",H);
}

Accept initial velocity, acceleration and time. Print the Final velocity and Displacement.

 
 
       
/*
Accept initial velocity, acceleration and time. 
Print the Final velocity and Displacement.
*/

#include<stdio.h>
main()

{
    int u,a,t;
    float v,s;

    printf("Enter u, a, t - ");
    scanf("%d%d%d",&u,&a,&t);

    v=u+(a*t);

    printf("Velocity = %f",v);

    s=(u*t)+(0.5*a*t*t);

    printf(" Acceleration=%f",s);
}

Define Class, Create Objects using Parameterized Constructor and Display the Object Count after each Object

 
       

class Student
{
 int roll;
 double per;
 static int cnt=0;
 student () {cnt ++}
 student (int r, String nm, double p)
 {
  roll = r;
  name=nm;
  cnt++;
  System.out.println("Counter= "+cnt);
 }
 public String toString()
 {
  return("Roll no "+roll+" Name= "+name+" Percentage= "+per);
 }
 public static void main(String args[])
 {
  Student s1= new Student (1,"Rohit",65.12);
  System.out.println(s1);
  Student s2= new Student (2,"Pranav",61.12);
  System.out.println(s2);
  Student s1= new Student (1,"Aditya",68.12);
  System.out.println(s1);
  System.out.println("Number of students: "+cnt);
 }
}