Extract bits from number

Write a logic to extract P bits from Position N in an integer M.

#include<stdio.h>
void Print_Num_inBinary(int);
int main()
{
	int num,pos,NoOfBits,i,val = 0,j=0;
	printf("Enter a Number = ");
	scanf("%d",&num);
	Print_Num_inBinary(num);
	printf("Enter a bit(Position) = ");
	scanf("%d",&pos);
	if(pos >=0 && pos <= (sizeof(int)*8-1))
	{
		printf("How many bits you want to extract = ");
		scanf("%d",&NoOfBits);
		if((pos + NoOfBits) <= (sizeof(int)*8-1))
		{
			for(i = pos;i < pos + NoOfBits;i++)
			{
				val = val | ((num >> i & 1) << j);
				j++;
			}
			Print_Num_inBinary(val);
		}
		else
			printf("Not Possible....\n");
	}
	else
	{
		printf("\nInvalid Bit Positon\n");
	}
	return 0;
}
void Print_Num_inBinary(int n)
{
	int i;
	printf("\n%d Bit Binary Representation of a Number\n",sizeof(int)*8);
	for(i = ((sizeof(int)*8)-1);i >= 0;i--)
	{
		printf("%d",n >> i & 1);
		if(!(i%8))
			printf(" ");
	}
	printf("\n\n");
}

Output

Enter a Number = 15
32 Bit Binary Representation of a Number
00000000 00000000 00000000 00001111
Enter a bit(Position) = 0
How many bits you want to extract = 3
32 Bit Binary Representation of a Number
00000000 00000000 00000000 00000111

Enter a Number = 255
32 Bit Binary Representation of a Number
00000000 00000000 00000000 11111111
Enter a bit(Position) = 5
How many bits you want to extract = 5
32 Bit Binary Representation of a Number
00000000 00000000 00000000 00000111