C- Program to find the biggest of three numbers.

/* Finding the biggest of 3 numbers using if...else - BIGIFEL.C */

# include <stdio.h>
# include <conio.h>
void main()
{
int a, b, c ;
clrscr() ;
printf("Enter three numbers : ") ;
scanf("%d %d %d", &a, &b, &c) ;
if(a > b)
{
if(a > c)
printf("\n%d is the biggest number", a) ;
else
printf("\n%d is the biggest number", c) ;
}
else
{
if(c > b)
printf("\n%d is the biggest number", c) ;
else
printf("\n%d is the biggest number", b) ;
}
getch() ;
}
RUN 1 :
~~~~~~~
Enter three numbers : 10 20 30
30 is the biggest number
RUN 2 :
~~~~~~~
Enter three numbers : 20 30 10
30 is the biggest number
RUN 3 :
~~~~~~~
Enter three numbers : 30 10 20
30 is the biggest number

C program of printing multiplication table.

/* Program to print the multiplication table - MULTABLE.C */

# include <stdio.h>
# include <conio.h>
void main()
{
int r, c, y ;
clrscr() ;
r = 1 ;
printf("The multiplication table is :\n\n") ;
do
{
c = 1 ;
do
{
y = r * c ;
printf("%5d", y) ;
c = c + 1 ;
} while(c <= 10) ;
printf("\n\n") ;
r = r + 1 ;
} while(r <= 10) ;
getch() ;
}
RUN 1 :
~~~~~~~
The multiplication table is :
1 2 3 4 5 6 7 8 9 10
2 4 6 8 10 12 14 16 18 20
3 6 9 12 15 18 21 24 27 30
4 8 12 16 20 24 28 32 36 40
5 10 15 20 25 30 35 40 45 50
6 12 18 24 30 36 42 48 54 60
7 14 21 28 35 42 49 56 63 70
8 16 24 32 40 48 56 64 72 80
9 18 27 36 45 54 63 72 81 90
10 20 30 40 50 60 70 80 90 100

C Program of Performing arithmetic operations using switch...case.

/* Performing arithmetic operations using switch...case 
- ARITH.C */


#include<stdio.h>
#include<conio.h>
void main()
{
int n1, n2, ch ;
clrscr() ;
printf("Enter the first number : ") ;
scanf("%d", &n1) ;
printf("\nEnter the second number : ") ;
scanf("%d", &n2) ;
printf("\n[1] -> Addition ") ;
printf("\n[2] -> Subtraction ") ;
printf("\n[3] -> Multiplication ") ;
printf("\n[4] -> Division ") ;
printf("\n\nEnter your choice <1...4> : ") ;
scanf("%d", &ch) ;
switch(ch)
{
case 1 :
printf("\n%d + %d = %d", n1, n2, n1 + n2) ;
break ;
case 2 :
printf("\n%d - %d = %d", n1, n2, n1 - n2) ;
break ;
case 3 :
printf("\n%d * %d = %d", n1, n2, n1 * n2);
break ;
case 4 :
printf("\n%d / %d = %.2f", n1, n2, (float)n1 / n2);
break ;
default :
printf("\nInvalid choice");
break ;
}
getch();
}