int a = -12;
int b = 7;

int suma = a + b;
int resta = a - b;
int producto = a * b;
real division = a / b;
int resto = a % b;
int expo = a ** b;

write("Siendo dos enteros a = -12 y b = 7");
write("       suma de a + b = ", suma);
write("      resta de a - b = ", resta);
write("   producto de a * b = ", producto);
write("   división de a / b = ", division);
write("   resto de a mod  b = ", resto);
write("exponenciación a ^ b = ", expo);