C Programming - Control Instructions - Discussion
Discussion Forum : Control Instructions - Find Output of Program (Q.No. 12)
12.
What will be the output of the program?
#include<stdio.h>
int main()
{
int a = 300, b, c;
if(a >= 400)
b = 300;
c = 200;
printf("%d, %d, %d\n", a, b, c);
return 0;
}
Answer: Option
Explanation:
Step 1: int a = 300, b, c; here variable a is initialized to '300', variable b and c are declared, but not initialized.
Step 2: if(a >= 400) means if(300 >= 400). Hence this condition will be failed.
Step 3: c = 200; here variable c is initialized to '200'.
Step 4: printf("%d, %d, %d\n", a, b, c); It prints "300, garbage value, 200". because variable b is not initialized.
Discussion:
16 comments Page 2 of 2.
Denny said:
1 decade ago
The statement B must be in the braces if not we can think that both B and C are under the 'if statement'. As the condition on the if statement is false both B and C can't be executed.
Ramya said:
1 decade ago
Here in the question compiler checks whether 300> = 400 it is false therefore b = 300 is not executed following simple if syntax and it comes out of if and next statement i.e. c = 200 is executed and since storage class of a, b, c is automatic default values of those variables are garbage values since b is not initialized b = garbage and a = 300, c = 200.
Vikram singh said:
10 years ago
Why C = 200 is independent of "if" statement?
Abhishek said:
9 years ago
@Deepika.
The default scope of the "if" statement is only the next statement so it won't enter into b statement and go to c statement. If you want to execute more than one statement you need to write it in the pair of braces.
The default scope of the "if" statement is only the next statement so it won't enter into b statement and go to c statement. If you want to execute more than one statement you need to write it in the pair of braces.
Angshuman said:
8 years ago
How C gets executed if it is inside the loop and loop condition doesn't satisfy?
Shivani said:
6 years ago
Thanks all for explaining.
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