How a negative integer is stored.

A static local variables retains its value between the function call and the default value is 0. The following function will print 1 2 3 if called thrice.

void f() { 
static int i; 
++i; 
printf(“%d “,i); 
}

If a global variable is static then its visibility is limited to the same source code.

Used to resolve the scope of global symbol.

Example: 
main() {
extern int j;
Printf("%d",j);
}

int j = 20;

Prints the formatted output onto the character array.

If a variable is used most frequently then it should be declared using register storage specifier, then possibly the compiler gives CPU register for its storage to speed up the look up of the variable.

A pointer initially holding valid address, but later the held address is released or freed. Then such a pointer is called as dangling pointer.

It is used to alias the existing type. Also used to simplify the complex declaration of the type.

The expression appearing on right side of the assignment operator is called as rvalue. Rvalue is assigned to lvalue, which appears on left side of the assignment operator. The lvalue should designate to a variable not a constant.

The parameters sent to the function at calling end are called as actual parameters while at the receiving of the function definition called as formal parameters.