Getting Started With C

Q1.Write a program to calculate and print the area of a square.....

#include<stdio.h>
#include<conio.h>
void main()
{
   clrscr();
  int height,width,area;
  height=5;
  width=4;
 area=height*width;
  printf("Area of  square=%d",area);
 getch();
}

Q2.Write a program that adds two floating point numbers and shows their sum on the screen............

#include<stdio.h>
#include<conio.h>

void main(void)

{

   clrscr();
   float var1,var2,res;
   var1=24.27;
   var2=41.50;
   res=var1+var2;
  printf("%f + %f=%f",var1,var2,res);


getch();

}

Q3.Write a program to convert the distance in kilometers into meters.........

#include<stdio.h>
#include<conio.h>

void main(void)

{

   clrscr();

  double meter,kilometer;
  printf("Enter distance in kilometers:");
  scanf("%lf",&kilometer);
  meter=kilometer*1000;
  printf("\n%lf kilometers=%lf meters",kilometer,meter);

getch();

}


Q4.Write a program that displays the ASCII code of the character typed by the user.....

#include<stdio.h>
#include<conio.h>

void main()

{
   clrscr();
   char ch;

   printf("Enter a character:");
  ch=getche();

  printf("\nThe ASCII code for \'%c\' is %d",ch,ch);

}




Q5.Write a program that displays the value stored in a string variable name......

#include<stdio.h>
#include<conio.h>

void main()

{
     clrscr();
    char name[ ]="ZAIN";
   printf("Name is %s",name);

   getch();

}


Q6.Write a program to display the following output using single printf statement.......

      *
      *  *
      *   *   * 
      *    *   *   *


#include<stdio.h>
#include<conio.h>

void main()

{
   clrscr();

  printf("*\n**\n***\n****");

getch();

}

Q7.Write a program that inputs base and height from the user and calculates area of a triangle by using the formula  Area=1/2*Base*Height........

#include<stdio.h>
#include<conio.h>


void main()


{
   clrscr();


    float base,height;
   double area;
   printf("Enter base:");
  scanf("%f",&base);
  printf("Enter height:");
  scanf("%f",&height);
  area=0.5*base*height;
 printf("Area=%5.2f",area);



getch();


}



Q8.Write a program that inputs name,age and address from the user and displays it on the screen......

#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

 char name[25],address[30];
 int age;
 printf("Enter your age:");
 scanf("%d",&age);
 printf("Enter your name:");
 scanf("%s",name);
 printf("Enter your address:");
 scanf("%s",address);
 printf("your name is %s\n",name);
 printf("your address is %s\n",address);
 printf("your age is %d\n",age);

getch();

}

Q9.Write a program that gets temperature from the user in celsius and converts it into Fahrenheit using the formula F=9/5*C+32.......

#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

float cel,faren;
printf("Enter temperature in celcius:");
scanf("%f",&cel);
faren=9.0/5.0*cel+32;
printf("Temperature in Fahrenheit is %5.2f",faren);

getch();

}


Q10.Write a program that gets a three-digit number from the user and displays it in reverse order.For example if the user enter 123,it displays 321.....

#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

 int n,a,b;
 printf("Enter 3-digit number:");
 scanf("%d",&n);
 a=n/100;
 n=n%100;
 b=n/10;
 n=n%10;
 printf("Number in reverse order is %d%d%d",n,b,a);

getch();

}


Q11.Write a program that inputs 4 numbers and calculates the sum,average, and product  of all the numbers....


#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

 int a,b,c,d,sum,product;
 float avg;
 printf("Enter 4 numbers:");
 scanf("%d%d%d%d",&a,&b,&c,&d);
 sum=a+b+c+d;
 product=a*b*c*d;
 avg=sum/4.0;
 printf("Sum of all numbers:%d\n",sum);
 printf("Product of all numbers:%d\n",product);
 printf("Average of all numbers:%5.2f",avg);

getch();

}


Q12.Write a program that converts a person's height from inches to centimeters using the formula 2.54*height.....

#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

int height;
float height_in_cent;
printf("Enter height in inches:");
scanf("%d",&height);
height_in_cent=height*2.54;
printf("Your height in centimeters is:%f",height_in_cent);

getch();

}

Q13.Write a program that inputs two numbers and exchanges their values.The program should display the values of variables before and after exchange.....

#include<stdio.h>
#include<conio.h>

void main()

{

clrscr();

 int x,y,temp;
 printf("Enter two numbers:");
 scanf("%d%d",&x,&y);
 printf("Value in x:%d\n",x);
 printf("Value in y:%d\n",y);
 temp=x;
 x=y;
 y=temp;
 printf("Value in x after exchange:%d\n",x);
 printf("Value in y after exchange:%d\n",y);

getch();

}


Q14.Write a program to find out the area of triangle when three sides a, b and c of the triangle are given.Use appropriate statements to input the values of a, b and c from the keyboard.Formula for the area or triangle is Area=(s(s-a)(s-b)(s-c))1/2  where s=(a+b+c)/2...


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

void main()

{

clrscr();

 float a,b,c;
 double s,area;
 printf("Enter side A:");
 scanf("%f",&a);
 printf("Enter side B:");
 scanf("%f",&b);
 printf("Enter side C:");
 scanf("%f",&c);
 s=(a+b+c)/2.0;
 area=sqrt(s*(s-a)*(s-b)+(s-c));
 printf("Area of triangle is %f",area);

getch();

}


Q15.Write a program that inputs radius of sphere from the user.Calculates its volume and surface area using the formula Area=4*3.14*r*r and circumference=4/3*3.14*r*r*r....

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
float r,area,cir;
printf("Enter radius:");
scanf("%f",&r);
area=4.0*3.14*r*r;
cir=(4.0/3.0)*3.14*r*r*r;
printf("\nArea is %5.25f\n",area);
printf("Circumference is %5.2f\n",cir);
getch();

}

Q16.Write a program that converts a temperature in degrees.Farhenheit to degrees Celsicus.For conversion,use the following formula C=5/9(F-32)....

#include<stdio.h>
#include<conio.h>

void main()

{

 clrscr();
 float cel,faren;
 printf("Enter temperature in farenheit:");
 scanf("%d",&faren);
 cel=5.0/9.0*(faren-32);
 printf("Temperature in celcius is %f",cel);

getch();

}

Q17.Write a program that displays the following shape using nested loops.The outer loop should be for loop and inner loop should be while loop..

*******
******
*****
****
***
**
*


#include<stdio.h>
#include<conio.h>

void main()
{
   int i,j;
   clrscr();
  for(i=1;i<=7;i++)
{
   j=i;
   while(j<=7)
{
   printf("*");
   j++;
}
   printf("\n");
}

getch();

}