C Programming - Control Instructions - Discussion
Discussion Forum : Control Instructions - Point Out Errors (Q.No. 9)
9.
Point out the error, if any in the program.
#include<stdio.h>
int main()
{
int a = 10, b;
a >=5 ? b=100: b=200;
printf("%d\n", b);
return 0;
}
Answer: Option
Explanation:
Variable b is not assigned.
It should be like:
b = a >= 5 ? 100 : 200;
Discussion:
34 comments Page 1 of 4.
Sandy said:
1 decade ago
It gives output as 100 when executed on DEV C++.
Prafull said:
1 decade ago
How the err "Error: L value required for b" comes? Can anyone explain for me?
Thanx in advance.
Thanx in advance.
Vishal yadav said:
1 decade ago
It comes because on the left side of the assignment operator there are more than two variables having ? between the if you use (b=100) instead of it, there will be no error.
Ankit said:
1 decade ago
Still I don't understood.
Vadya said:
1 decade ago
int a = 10, b;
a >=5 ? b=100: 200;
printf("%d\n", b);
This code works.! Why.???
How is it equivalent to b=(a>=5?100:200) ?
a >=5 ? b=100: 200;
printf("%d\n", b);
This code works.! Why.???
How is it equivalent to b=(a>=5?100:200) ?
Vinoth said:
1 decade ago
L value means left side of the expression is equal to b.so
b=(a>=5)?b=100:b=200;
b=(a>=5)?b=100:b=200;
Durga said:
1 decade ago
Hi this program explanation is not clear. Please send brief expl.
Mani said:
1 decade ago
Hi, You have to assign the value to any variable, but the exp a >=5 ? b=100: 200; is not assigned to any variable. So it gives the error msg of lvalue required.
Rajat Rahul said:
1 decade ago
Mani is correct.
Abhishek rai said:
1 decade ago
#include<stdio.h>
int main()
{
int a = 10, b;
a >=5 ? (b=100): (b=200);
printf("%d\n", b);
return 0;
}
int main()
{
int a = 10, b;
a >=5 ? (b=100): (b=200);
printf("%d\n", b);
return 0;
}
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