C Programming - Control Instructions - Discussion
Discussion Forum : Control Instructions - Find Output of Program (Q.No. 3)
3.
What will be the output of the program?
#include<stdio.h>
int main()
{
int a = 500, b = 100, c;
if(!a >= 400)
b = 300;
c = 200;
printf("b = %d c = %d\n", b, c);
return 0;
}
Answer: Option
Explanation:
Initially variables a = 500, b = 100 and c is not assigned.
Step 1: if(!a >= 400)
Step 2: if(!500 >= 400)
Step 3: if(0 >= 400)
Step 4: if(FALSE) Hence the if condition is failed.
Step 5: So, variable c is assigned to a value '200'.
Step 6: printf("b = %d c = %d\n", b, c); It prints value of b and c.
Hence the output is "b = 100 c = 200"
Discussion:
33 comments Page 1 of 4.
Vijaya zambre said:
1 decade ago
b = 300;
Why this step is mentioned there?
Why this step is mentioned there?
Santosh said:
1 decade ago
In step 4 if the condition is failed then why it is taking c=200.
Srk said:
1 decade ago
program can be re-written as follows;
#include<stdio.h>
int main()
{
int a = 500, b = 100, c;
if(!a >= 400)
{
b = 300;
}
c = 200;
printf("b = %d c = %d\n", b, c);
return 0;
}
#include<stdio.h>
int main()
{
int a = 500, b = 100, c;
if(!a >= 400)
{
b = 300;
}
c = 200;
printf("b = %d c = %d\n", b, c);
return 0;
}
Vino said:
1 decade ago
I want the meaning of if(!a>=400).
Naveen said:
1 decade ago
! is having highest preference
so !500 is 0
>= is next to ! in preference
so 0 >= 400 is 0(flase)
;)
so !500 is 0
>= is next to ! in preference
so 0 >= 400 is 0(flase)
;)
Levin max said:
1 decade ago
Take !a>=400 as a<=400.
Venkat said:
1 decade ago
What does this symbol "!" in the above program? can any one explain clearly?
Ganga said:
1 decade ago
Why b value gets 100 any one explain me?
Suneetha said:
1 decade ago
Because the conidition is failed. So we already assigend the value b=100 so it will print.
Biswajit said:
1 decade ago
@Naveen.
Your explanation is right, "!" it check the value whether it is zero or not, if Zero it return 1 otherwise 0.
Your explanation is right, "!" it check the value whether it is zero or not, if Zero it return 1 otherwise 0.
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