int f(int x, int y, int z)
{
int area1 = area(x,y);
if (area1 <= 0) error("non-positive area\n");
int area2 = framed_area(1,z);
int area3 = framed_area(y,z);
double ratio = double(area1)/area3;
// ...program doesn't compile since this doesn't return anything
}
int main()
{
int x = -1;
int y = 2;
int z = 4;
//...
int area1 = area(x,y);
int area2 = framed_area(1,z);
int area3 = framed_area(y,z);
double ratio = double(area1)/area3; //convert to double to get floating-point division
}
int f(int x, int y, int z)
{
cout << "x=" << x << "; y=" << y << "; z=" << z << endl;
int area1 = area(x,y);
if (area1<=0) error("non-positive area");
int area2 = framed_area(1,z);
int area3 = framed_area(y,z);
double ratio = double(area1)/area3;
// ...
cout << "area1=" << area1 << endl
<< "area2=" << area2 << endl
<< "area3=" << area3 << endl;
}
int main()
{
int x = -1;
int y = 2;
int z = 4;
int area1 = area(x, y);
if (area1 <= 0) error("non-positive area");
int area2 = framed_area(1, z);
int area3 = framed_area(y, z);
double ratio = double(area1) / area3;
cout << ratio << endl;
return 0;
}
int main()
try {
int x = -1;
int y = 2;
int z = 4;
int area1 = area(x, y);
int area2 = framed_area(1, z);
int area3 = framed_area(y, z);
double ratio = double(area1) / area3;
cout << ratio << endl;
return 0;
} catch (Bad_area) {
cout << "Oops! bad arguments to area()\n";
}
int main()
try
{
int x = -1;
int y = 2;
int z = 4;
// ...
int area1 = area(x,y);
int area2 = framed_area(1,z);
int area3 = framed_area(y,z);
double ratio = double(area1)/area3; // convert to double to get
// floating-point division
}
catch (exception& e) {
cerr << "error: " << e.what() << '\n';
return 1;
}
catch (...) {
cerr << "Oops: unknown exception!\n";
return 2;
}
int f(int x, int y, int z)
{
//a handling of error is in the
//calling function
int area1 = area(x,y);
if (area1 == -1) error("bad argument for area()");
int area2 = framed_area(1,z);
if (area2 == -1) error("bad argument for framed_area()");
int area3 = framed_area(y,z);
if (area3 == -1) error("bad argument for framed_area()");
if (area3 == 0) error("area3 is equal 0");
double ratio = double(area1)/area3;
cout << "area1 == " << area1 << endl
<< "area2 == " << area2 << endl
<< "area3 == " << area3 << endl
<< "ratio == " << ratio << endl;
}
