To Be Familiarize With Simple Input/ Output and Operators In C

1. WAP to display "It is my first program".
2. WAP to enter values for 3 different types of variables & display them
3. WAP to enter 3 sides of a triangle & display its Area
4. WAP to display the equivalent upper case letter when lowercase is entered
5. WAP to enter two integer numbers and swap the values of two number
6. WAP to enter the marks of 3 subjects and display the average marks obtained
7. WAP to enter time in seconds and display its equivalent hour, minutes and seconds

====================================================================

1.Display "It is my first program"

#include <stdio.h>

#include <conio.h>

void main ()

{

clrscr();

printf ("It is my First program");

getch ();

}

====================================================================

2. Enter values for 3 different types of variables & display them

#include <stdio.h>

#include <conio.h>

void main ()

{

int a;

float b;

char c;

clrscr ();

printf ("Enter int, float and char:\n");

scanf ("%d %f %c",&a,&b,&c);

printf ("Integer is %d\nFloat is %f\nCharacter is %c",a,b,c);

getch ();

}

====================================================================

3.Enter 3 sides of a triangle & display its Area

#include <stdio.h>

#include <conio.h>

#include <math.h>

void main()

{

int a, b, c, s;

float Ar;

clrscr ();

printf ("Enter three sides of a traingle\n");

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

s=(a+b+c)/2;

Ar=sqrt(s*(s-a)*(s-b)*(s-c));

printf ("The area of traingle is %f",Ar);

getch ();

}

====================================================================

4. Display the equivalent upper case letter when lowercase is entered

#include <stdio.h>

#include <conio.h>

void main()

{

char lc, uc;

clrscr ();

printf ("Enter a lowercase\n");

scanf ("%c",&lc);

uc=lc-32;

printf ("The uppercase is %c\n",uc);

getch ();

}

====================================================================

5. Enter two integer numbers and swap the values of two number

#include <stdio.h>

#include <conio.h>

void main ()

{

int x, y, temp;

clrscr ();

printf ("Enter the value of x and y\n");

scanf ("%d %d",&x,&y);

printf ("Before swapping \nx=%d\ny=%d\n",x,y);

temp=x;

x=y;

y=temp;

printf ("After swapping \nx=%d\ny=%d",x,y);

getch ();

}

====================================================================

6. Enter the marks of 3 subjects and display the average marks obtained

#include <stdio.h>

#include <conio.h>

#include <math.h>

void main()

{

float phy, com, math,Av;

clrscr ();

printf ("Enter marks of Physics, computer and math\n");

scanf ("%f%f%f",&phy,&com,&math);

Av=((phy+com+math)/3.0);

printf ("The average marks is %f",Av);

getch ();

}

====================================================================================

7.. Enter time in seconds and display its equivalent hour, minutes and seconds

#include <stdio.h>

#include <conio.h>

void main ()

{

int a,hr,temp,min,sec;

clrscr ();

printf ("Enter time in seconds\n");

scanf ("%d",&a);

hr=a/3600;

temp=a%3600;

min=temp/60;

sec=min%60;

printf ("The time is %d hour %d min %d sec\n",hr, min, sec);

getch ();

}