forked from ivan-igorevich/basic-c
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int nat; // natural (integer)
|
||
|
|
int num; // numerator
|
||
|
|
int den; // denominator
|
||
|
|
} Fraction;
|
||
|
|
|
||
|
|
void frPrint(Fraction f) {
|
||
|
|
if (f.num != 0)
|
||
|
|
if (f.nat == 0)
|
||
|
|
printf("%d / %d", f.num, f.den);
|
||
|
|
else
|
||
|
|
printf("%d %d/%d",f.nat,f.num,f.den);
|
||
|
|
else
|
||
|
|
printf("%d", f.nat);
|
||
|
|
}
|
||
|
|
|
||
|
|
void frDesinteger(Fraction *f) {
|
||
|
|
if (f->nat == 0) return;
|
||
|
|
int sign = (f->nat < 0) ? -1 : 1;
|
||
|
|
if (f->nat < 0)
|
||
|
|
f->num = -f->num;
|
||
|
|
f->num = f->num + (f->nat * f->den);
|
||
|
|
f->nat = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void frMultiply(Fraction f1, Fraction f2, Fraction *result) {
|
||
|
|
frDesinteger(&f1);
|
||
|
|
frDesinteger(&f2);
|
||
|
|
result->num = f1.num * f2.num;
|
||
|
|
result->den = f1.den * f2.den;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, const char* argv[]){
|
||
|
|
Fraction f1, f2, result;
|
||
|
|
// f1 = -1 | 1 /5
|
||
|
|
f1.nat = -1;
|
||
|
|
f1.num = 1;
|
||
|
|
f1.den = 5;
|
||
|
|
// f2 = 1 | 1 /5
|
||
|
|
f2.nat = 1;
|
||
|
|
f2.num = 1;
|
||
|
|
f2.den = 5;
|
||
|
|
// result = 0
|
||
|
|
result.nat = 0;
|
||
|
|
result.num = 0;
|
||
|
|
result.den = 0;
|
||
|
|
|
||
|
|
printf("Before:\n");
|
||
|
|
printf(" f1: "); frPrint(f1); printf("\n");
|
||
|
|
printf(" f2: "); frPrint(f2); printf("\n");
|
||
|
|
printf("result: "); frPrint(result); printf("\n");
|
||
|
|
puts("After:");
|
||
|
|
frMultiply(f1, f2, &result);
|
||
|
|
printf("result: "); frPrint(result); printf("\n");
|
||
|
|
}
|