Im getting an error: register name not specified for 'i

Question

#include <stdio.h>
register int i = 10;
int main(void)
{
    printf( " i = %d \n ", i );
    return 0;
}

Here I declared the variable i as register. But compiling it showing the following error

" error: register name not specified for ‘i’ "

Why shouldn't we use the register keyword globally?

Answer 1

A registervariable is a type of local variable.
This is a hint for storing a value in a register for faster access.
A register variable cannot be global or static.
It can only be defined in a block.
Also, please format the code you publish

Answer 2

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Answer 3

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