struct rational substract(struct rational r1, struct rational r2) {
changeToSameDenominator(&r1,&r2);
struct rational r;
r.numerator = r1.numerator - r2.numerator;
r.denominator = r.numerator==0 ? 0 : r1.denominator;
return simplifyRational(r);
}
struct rational add(struct rational r1, struct rational r2) {
changeToSameDenominator(&r1,&r2);
struct rational r;
r.numerator = r1.numerator + r2.numerator;
r.denominator = r1.denominator;
return simplifyRational(r);
}
KNumber::KNumber(TQString const & num)
{
if (TQRegExp("^(inf|-inf|nan)$").exactMatch(num))
_num = new _knumerror(num);
else if (TQRegExp("^[+-]?\\d+$").exactMatch(num))
_num = new _knuminteger(num);
else if (TQRegExp("^[+-]?\\d+/\\d+$").exactMatch(num)) {
_num = new _knumfraction(num);
simplifyRational();
}
else if (TQRegExp("^[+-]?\\d+(\\.\\d*)?(e[+-]?\\d+)?$").exactMatch(num))
if (_fraction_input == true) {
_num = new _knumfraction(num);
simplifyRational();
} else
_num = new _knumfloat(num);
else
_num = new _knumerror("nan");
}
struct rational product(struct rational r1, struct rational r2) {
struct rational r;
r.numerator = r1.numerator * r2.numerator;
r.denominator = r1.denominator * r2.denominator;
if(r.denominator<0) {
r.denominator *= -1;
r.numerator *= -1;
}
return simplifyRational(r);
}
struct rational promptUserForRational() {
struct rational r;
printf("Please type in your rational values:\n");
scanf("%d",&r.numerator);
printf("/\n");
scanf("%d",&r.denominator);
while(r.denominator == 0) {
printf("Wrong denominator, please try again:\n%d / ",r.numerator);
scanf("%d",&r.denominator);
}
// adopt signed value
if(r.denominator<0) {
r.denominator *= -1;
r.numerator *= -1;
}
return simplifyRational(r);
}
void pratica25exercise6(int argc, const char * argv[]) {
printf("\n\nExercise 6:\n");
struct rational r = promptUserForRational();
printf("Simplified it's %d/%d\n\n",r.numerator,r.denominator);
struct rational r1;
struct rational r2;
r1.numerator = 8;
r1.denominator = 4;
r2.numerator = 3;
r2.denominator = 6;
r1 = simplifyRational(r1);
test(r1.numerator==2,"Test simplify numerator");
test(r1.denominator==1,"Test simplify denominator");
r2 = simplifyRational(r2);
test(r2.numerator==1,"Test simplify numerator");
test(r2.denominator==2,"Test simplify denominator");
struct rational r3 = add(r1,r2);
test(r3.numerator==5, "Check add");
test(r3.denominator==2, "Check add");
r2.numerator = -2;
r3 = add(r1,r2);
test(r3.numerator==1, "Check add");
test(r3.denominator==1, "Check add");
r2.numerator = -2;
r3 = substract(r1,r2);
test(r3.numerator==3, "Check substraction");
test(r3.denominator==1, "Check substraction");
r2.numerator = 2;
r3 = substract(r1,r2);
test(r3.numerator==1, "Check substraction");
test(r3.denominator==1, "Check substraction");
// 2/1 * -2/2 = -4/2 = -2/1
r2.numerator = -2;
r3 = product(r1,r2);
test(r3.numerator==-2, "Check substraction");
test(r3.denominator==1, "Check substraction");
// 2/1 * -2/2 = 2/1 * 2/-2 = 4/-2 = -2/1
r3 = divide(r1,r2);
test(r3.numerator==-2, "Check substraction");
test(r3.denominator==1, "Check substraction");
// 2/2 * -2/6 = -4/12= -1/3
r2.numerator = -2;
r1.denominator = 2;
r2.denominator = 6;
r3 = product(r1,r2);
test(r3.numerator==-1, "Check substraction");
test(r3.denominator==3, "Check substraction");
// 2/2 * -2/6 = 2/2 * 6/-2 = 12/-4= -3/1
r2.numerator = -2;
r1.denominator = 2;
r2.denominator = 6;
r3 = divide(r1,r2);
test(r3.numerator==-3, "Check substraction");
test(r3.denominator==1, "Check substraction");
}