Nested if Else Condition in C
1.What is nested if else in C ?
Ans: A nested if in C is an if statement that is the target of another if statement. Nested if statements mean an if statement inside another if statement. Yes, C allow us to nested if statements within if statements, i.e, we can place an if statement inside another if statement.
Simple Explanation :
If we open the top of box then first layer opens and after that all layers open one by one. If we open it from wrong side the box will not open .
In nested if else we write first condition and second condition inside it (like a container is kept inside the another container). If one condition is false it will directly go to else.
Working of nested if else :
Syntax :
if (condition1)
{
// Executes when condition1 is true
if (condition2)
{
// Executes when condition2 is true
}
else
{
// Executes when condition2 is false
}
else
{
//Executes when condition 1 is False
}
Example:
1. Write a program to determine that the number is positive or not. if it is positive then check it is even or odd. If it is even check that it is divisible by four or not.
#include<stdio.h>
int main ()
{
int a;
printf("enter your favourite number");
scanf("%d",&a);
if (a>=0)
{
printf("the number is a whole number\n");
if(a%2==0)
{
printf("the number is even\n");
if (a%4==0)
{
printf("the number is divisible by 4\n");
}
else
{
printf("the number is not divisible by 4\n");
}
}
else
{
printf("the number is odd\n");
}
}
else
{
printf("the number is negative\n");
}
}
Output:
2. Make a army form to check that the person is eligible or not.
#include<stdio.h>
int main ()
{
int h,w,e;
float b;
char a[20],i;
printf("enter your name");
scanf("%s",&a);
printf("are you indian?\n");
printf("a.yes\nb.no\n");
printf("enter a or b :\n");
scanf(" %c",&i);
printf("enter your height\n");
scanf("%d",&h);
printf("enter your weight\n");
scanf("%d",&w);
printf("enter your eyesight\n");
scanf("%d",&e);
printf("enter your bhmi\n");
scanf("%f",&b);
if (i=='a')
{
printf ("The person is eligible\n");
if (h>=165 && h<=180)
{
printf("The height is also between the given range\n");
if (w>=60 && w<=95)
{
printf("the weight is also between the given range\n");
if (e>=6 && e<=8)
{
printf("the eyesight is also between the given range\n");
if (b>=21.4 && b<=24.3)
{
printf("the bmi is also between the gien range\n");
}
else
{
printf("the bmi is not between the given range\n");
}
else
{
printf("the eyesight is not between the range\n");
}
else
{
printf("the weight is not between the range\n");
}
else
{
printf("the height is not between the range\n");
}
else
{
printf("the person is not Indian\n");
}
}
Output:
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