DigitoVerificadorCPF

#include <stdio.h>

int main () {

	long int cpf=0, cpf2=0;
	int  a=0, b=1, c=0, d=0, e=0, f=0, g=0, h=0, i=0, j=0;
		

//	123456789


	scanf("%ld", &cpf);

	a = (cpf % 10)*2;
	b = (((cpf - a/2)/10)%10)*3;
	c = (((cpf - b/3)/100)%10)*4;
	d = (((cpf - c/4)/1000)%10)*5;
	e = (((cpf - d/5)/10000)%10)*6;
	f = (((cpf - e/6)/100000)%10)*7;
	g = (((cpf - f/7)/1000000)%10)*8;
	h = (((cpf - g/8)/10000000)%10)*9;
	i = (((cpf - h/9)/100000000)%10)*10;

//	printf ("%d %d %d %d\n", a	, b, c, d);
	

	int resto1 = (a+b+c+d+e+f+g+h+i)%11;

	
	if (resto1==0 || resto1 ==1) {
		printf ("%d", 0);
		cpf2 = 10 * cpf;			
	} else {
		printf("%d", 11- resto1);
		cpf2 = 10 * cpf + 11 - resto1;

	}

//	printf ("\n%ld\n", cpf2);

		
	a = (cpf2 % 10)*2;
	b = (((cpf2 - a/2)/10)%10)*3;
	c = (((cpf2 - b/3)/100)%10)*4;
	d = (((cpf2 - c/4)/1000)%10)*5;
	e = (((cpf2 - d/5)/10000)%10)*6;
	f = (((cpf2 - e/6)/100000)%10)*7;
	g = (((cpf2 - f/7)/1000000)%10)*8;
	h = (((cpf2 - g/8)/10000000)%10)*9;
	i = (((cpf2 - h/9)/100000000)%10)*10;	
	j = (((cpf2 - h/10)/1000000000)%10)*11;

	 resto1 = (a+b+c+d+e+f+g+h+i+j)%11;

	
	if (resto1==0 || resto1 ==1) {
		printf ("%d\n", 0);
	//	cpf2 = 10 * cpf;			
	} else {
		printf("%d\n", 11- resto1);
	//	cpf2 = cpf = 10 * cpf + 11 - resto1;

	}
	
	return 0;
}