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 4 of 4.
Pranali said:
8 years ago
@Gourav.
Because you are printing the value of b, so it will print 1.
Because you are printing the value of b, so it will print 1.
Rishikesh Sonawane said:
4 years ago
1) Ternary operator has high precedence than "=".
2) So the compiler is , taking it as , ((a >=5) ? b=100: b)=200;
Hence the error Lvalue required.
2) So the compiler is , taking it as , ((a >=5) ? b=100: b)=200;
Hence the error Lvalue required.
Pradeep said:
3 years ago
Here, L VALUE Error because only one time initialise b takes value 100, only for second-time b before need L VALUE.
Goku said:
2 months ago
L value = left value/left fun.
r value = right value.
((a >= 5) ? b = 100 : b) = 200;// Interpreted wrongly → Lvalue required.
So, it is declared that a=200 is not greatly important to understand and a= 100 is precedence.
r value = right value.
((a >= 5) ? b = 100 : b) = 200;// Interpreted wrongly → Lvalue required.
So, it is declared that a=200 is not greatly important to understand and a= 100 is precedence.
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