C Program: Find out the Largest Number by using Nested if Statement:

Enter the values of three numbers and find out the largest number using nested if ( means if-else contain multiple if-else statements ):

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,c;

clrscr();


 printf("Enter the values of a,b and c:");

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

if(a>b)                                          // if statement contain if-else statement

{

if(a>c)

printf(" a is larger ");

else                                             // Means (c>a)

printf(" c is larger ");

}

else                                     // Means (b>a)

{

if(b>c)

printf(" b is larger ");

else                                   // Means (c>b)

printf(" c is larger ");

}

getch();

}

// End of main()

Output:

Enter the values of a,b and c:

2

4

6

c is larger 

// (a>b) condition is False so comes out of the loop and control transfer to else part i.e (b>a).

(b>a) condition is True so enter in the else loop but (b>c) condition is False so control transfer to else part i.e (c>b). (c>b) condition is True so execute the statement c is larger.

NOTE: Follow the same procedure for the different values and check the output.