What is output below the question?

Question

#include<stdio.h>

int main()
{
int a=10,b=20,c=30;
if(c>b>a)
{
printf("true");
}
else
{
printf("false");
}
return 0;
}

What is answer above this code ? and how to answer is this can you explain me ?

Not a syntax error.

Answer 1

It works like this:

c>b ---> true, also called 1

1>a ---> false, also called 0

So the program execute the else rather than the if, printing false.

Answer 2

Your code giving warnings because the operation which use using it have no mathematical meaning . It wont affected if use will use like this which u mentioned on program .
So it will be better if u will use bracket with this type of operation of u can use check by using logical operators.
See this i have used bracket it working without any warnings.

#include<stdio.h>

int main()
{
int a=10,b=20,c=30;
if((c>b)>a)
{
printf("true");
}
else
{
printf("false");
}
return 0;
}

Answer 3

c>b>a and '>' has associativity is left to right. So c>b evaluated first next (30>20) > a. => 1>10 false....