Exemple

int main(int argc, char* argv[])
{
int a = 7;
double b = 22;

double result = b/a;

return result;
}

Solution
Transtypez explicitement l'une des variables vers le type correspondant.

int main(int argc, char* argv[])
{
int a = 7;
double b = 22;

double result = b / static_cast<double>(a);

return 
result;
}