Comparision Operators in Expression [ If Statement ]

Click Here : Indirect If Statement

We have seen basic concept about “Indirect Use of If Statement” . Now we are focusing on more and more short tutorials before solving MCQ’s .

#include<stdio.h>void main(){int a = 40 , b = 30 ,c;c = !(a>=0) >= 0printf("%d",c);}

Output :

1

How ?

1. While Solving such a Long expression , First Scan Expression from Left to Right .
2. Solve Expression bounded in Pair of ( ) .

Step 1 : 

1. Always Solve Bracket First

c = !(a>=0) >= 0

Step 2 :

1. a>=0 is True
2. So Replace “a>=0″ by 1

c = !1 >= 0

Step 3 : 

1. NOT Operator has Higher Priority Than >= Operator .
2. !1 = 0 
3. Replace “!1″  by “0″

c = 0 >= 0

Step 4 :

1. Obviously 0 >= 0 is True Condition 
2. Replace Whole Expression by 1 

c = 1

Thus C = 1

Related Articles:

1. Conditional Operators [ ?: ] in C
2. Expression Solving within if : Tutorial on If
3. Condition Statement MCQ 3 : Logical OR Operator inside if Condition
4. Condition Statement MCQ 1 : Non Zero number inside if
5. Programs Tutorials on Conditional Controls : if – else , else if ladder in C Programming