#include <stdio.h> int main(void) { int cpf, cpff, a, b, c, d, e, f, g, h, i, ax, bx, cx, dx, ex, fx, gx, hx, ix, ay, by, cy, dy, ey, fy, gy, hy, iy, j, jy, soma, somay, modulo, resto, restoy, dv, dvf; printf("Digite o número do CPF\n"); scanf("%d", &cpf); a = (cpf/100)*10; b = (cpf/1000)*10; c = (cpf/10000)*10; d = (cpf/100000)*10; e = (cpf/1000000)*10; f = (cpf/10000000)*10; g = (cpf/100000000)*10; h = (cpf/1000000000)*10; i = (cpf/10000000000)*10; ax = a*10; bx = b*9; cx = c*8; dx = d*7; ex = e*6; fx = f*5; gx = g*4; hx = h*3; ix = i*2; soma = ax+bx+cx+dx+ex+fx+gx+hx+ix; modulo = 11; resto = soma % modulo; dv = modulo - resto; if(dv > 9){ dv = 0; } j = dv; ay = a*11; by = b*10; cy = c*9; dy = d*8; ey = e*7; fy = f*6; gy = g*5; hy = h*4; iy = i*3; jy = j*2; somay = ay+by+cy+dy+ey+fy+gy+hy+iy+jy; restoy = somay % modulo; dvf = modulo - restoy; cpff = cpf+dv+dvf; if(cpff >= 00000000000 && cpff <= 99999999999){ printf("Esse CPF é valido\n"); } return 0; }