Fraction Math in C

Welcome to the Fraction Math in C page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

typedef struct {
    int numerator;
    int denominator;
} Fraction;

int gcd(int a, int b) {
    if (b == 0) return a;
    return gcd(b, a % b);
}

Fraction simplify(Fraction f) {
    int g = gcd(abs(f.numerator), abs(f.denominator));
    f.numerator /= g;
    f.denominator /= g;
    if (f.denominator < 0) {
        f.numerator = -f.numerator;
        f.denominator = -f.denominator;
    }
    return f;
}

Fraction parse_fraction(const char* str) {
    Fraction f;
    sscanf(str, "%d/%d", &f.numerator, &f.denominator);
    return simplify(f);
}

Fraction add(Fraction a, Fraction b) {
    Fraction result = {
        a.numerator * b.denominator + b.numerator * a.denominator,
        a.denominator * b.denominator
    };
    return simplify(result);
}

Fraction subtract(Fraction a, Fraction b) {
    Fraction result = {
        a.numerator * b.denominator - b.numerator * a.denominator,
        a.denominator * b.denominator
    };
    return simplify(result);
}

Fraction multiply(Fraction a, Fraction b) {
    Fraction result = {
        a.numerator * b.numerator,
        a.denominator * b.denominator
    };
    return simplify(result);
}

Fraction divide(Fraction a, Fraction b) {
    Fraction result = {
        a.numerator * b.denominator,
        a.denominator * b.numerator
    };
    return simplify(result);
}

int compare(Fraction a, Fraction b) {
    int lhs = a.numerator * b.denominator;
    int rhs = b.numerator * a.denominator;
    if (lhs < rhs) return -1;
    if (lhs > rhs) return 1;
    return 0;
}

void print_fraction(Fraction f) {
    printf("%d/%d\n", f.numerator, f.denominator);
}

int main(int argc, char* argv[]) {
    if (argc != 4) {
        printf("Usage: ./fraction-math operand1 operator operand2\n");
        return 1;
    }

    Fraction a = parse_fraction(argv[1]);
    Fraction b = parse_fraction(argv[3]);
    char* op = argv[2];

    Fraction result;
    int cmp;

    if (strcmp(op, "+") == 0) {
        result = add(a, b);
        print_fraction(result);
    } else if (strcmp(op, "-") == 0) {
        result = subtract(a, b);
        print_fraction(result);
    } else if (strcmp(op, "*") == 0) {
        result = multiply(a, b);
        print_fraction(result);
    } else if (strcmp(op, "/") == 0) {
        result = divide(a, b);
        print_fraction(result);
    } else if (strcmp(op, "==") == 0) {
        cmp = compare(a, b);
        printf("%d\n", cmp == 0);
    } else if (strcmp(op, ">") == 0) {
        cmp = compare(a, b);
        printf("%d\n", cmp > 0);
    } else if (strcmp(op, "<") == 0) {
        cmp = compare(a, b);
        printf("%d\n", cmp < 0);
    } else if (strcmp(op, ">=") == 0) {
        cmp = compare(a, b);
        printf("%d\n", cmp >= 0);
    } else if (strcmp(op, "<=") == 0) {
        cmp = compare(a, b);
        printf("%d\n", cmp <= 0);
    } else if (strcmp(op, "!=") == 0) {
        cmp = compare(a, b);
        printf("%d\n", cmp != 0);
    } else {
        printf("Invalid operator\n");
        return 1;
    }

    return 0;
}

Fraction Math in C was written by:

• Maximillian Naza

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.