Local Scope In C

• The variables declared inside a function or a block is known as local variables.
• Local variables can be accessed only within function or block.
• Local variables can not be accessed outside a function or a block.

C program - Local Scope

#include <stdio.h>
int main()
{
int m = 5;
void display(){
int m = 10; //Local variable declaration
printf("Value of M inside a function is %d",m);
}
display();
printf("\nValue of M outside a function is %d",m);
return 0;
}

Did You Know?

If there is no declaration of variable in a subfunction. Then the value of a variable will be fetched from global declaration. Let us check the same program that we used early.

#include <stdio.h>
int main()
{
int m = 5;
void display(){
//No Local variable declaration
printf("Value of M inside a function is %d",m);
}
display();
printf("\nValue of M outside a function is %d",m);
return 0;
}

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