C Programming - Declarations and Initializations - Discussion

What is the difference between that all three linkages?

Difference between GCC and TCC compiler?

It gives result according to the compiler.

GCC compiler gives Result: 9.

TCC compiler gives Result: 8.

Explanation:

In GCC compiler, variables are stored in stack memory area. First value 4 is stored after incrementing by the pre-increment operator then second value 5 is stored after increment. So the Result is 9.

But in case of TCC compiler first value 4 is stored in stack then before increment the second value of x=4 is stored. So the Result is 8.

@Kavitha.

It will give the output 8 only!

@Kavitha.

It will give only 8 as the output.

#include<stdio.h>
int main()
{
int x=3;
int z;
z=++x + x++;
printf("%d",z);
}

It gives the output 9,how?

@Karthick we use the return in the program because the return any value for example.

#include<stdio.h>
int main()
{
int i=5;
return i;
}

Output of the above program is 5 because it will be return the value of the i.

Why we use return in program?

You must initialize the i with a value because it will take a garbage value by default.

What is meant by external linkage?