void TestMathematicalOperationsOfTwoComplexNumbers()
{
cnum1.real = 1;
cnum1.imag = 2;
cnum2.real = 3;
cnum2.imag = 4;
complexNumber result;
result = complexAdd(cnum1, cnum2);
assert(result.real == 4);
assert(result.imag == 6);
result = complexSub(cnum1, cnum2);
assert(result.real = -2);
assert(result.imag = -2);
result = complexMul(cnum1, cnum2);
assert(result.real = -5);
assert(result.imag = 10);
result = complexDiv(cnum1, cnum2);
assert(result.real = .44);
assert(result.imag = .08);
}
void fixIntoUnitCircle (__CLPK_doublecomplex ioroots[], int nroots) {
for (int j = 0; j < nroots; j++)
if (complexMod (ioroots[j]) > 1.0) {
__CLPK_doublecomplex a = {1.0, 0.0}, b, c;
b.r = ioroots[j].r;
b.i = -ioroots[j].i; // Conjugate of the root
complexDiv (a, b, &c); // c = a/b
ioroots[j].r = c.r; // Return c
ioroots[j].i = c.i;
}
}
/**
* ---showMenu---
*
* Gives the user the choice of the mathematical operation
* to be executed
*
* 1: ADDITION | 2: SUBTRACTION | 3: MULTIPLICATION | 4: DIVISION
*
* recursive exception-handling for wrong user input
*/
void showMenu()
{
system("CLS");
printf_s("Welche Rechnenoperation m%cchten Sie durchf%chren?", oe, ue);
printf_s("\n1: Addition\n2: Subtraktion\n3: Multiplikation\n4: Division\n");
int userInput;
complexNumber divResult;
fflush(stdin);
scanf_s("%d", &userInput); fflush(stdin);
switch (userInput)
{
case ADDITION:
printf_s("\nDas Ergebnis der Operation Zahl1 + Zahl2 lautet: ");
showResult(complexAdd(cnum1, cnum2));
break;
case SUBTRACTION:
printf_s("\nDas Ergebnis der Operation Zahl1 - Zahl2 lautet: ");
showResult(complexSub(cnum1, cnum2));
break;
case MULTIPLICATION:
printf_s("\nDas Ergebnis der Operation Zahl1 * Zahl2 lautet: ");
showResult(complexMul(cnum1, cnum2));
break;
case DIVISION:
divResult = complexDiv(cnum1, cnum2);
if(divResult.real != -1 && divResult.imag != -1)
{
printf_s("\nDas Ergebnis der Operation Zahl1 / Zahl2 lautet: ");
showResult(divResult);
break;
} else
break;
default:
printf_s("\n%d, ist keine g%cltige Eingabe...\nBitte wiederholen:\n", userInput, ue);
Sleep(2000);
showMenu();
}
}
