自己做老是错的·帮帮忙

来源：百度知道 编辑：UC知道 时间：2024/07/02 06:26:16
(Fraction Calculator – functions) Write a program that lets the user perform arithmetic operations on fractions and display the results. Fractions are of the form a/b, where a and b are integers and b ≠ 0. Your program must be menu driven, allowing the user to select the operation ( +, -, *, or / ) and input the numerator and denominator of each fraction. Furthermore, your program must consist of at least the following functions:

a. Function menu: This function informs the user about the program’s purpose, explain how to enter data, and allows the user to select the operations.
b. Function addFractions: This function takes as input four integers representing the numerators and denominators of two fractions, adds the fractions, and returns the numerator and denominator of the result.
c. Function subtractFractions: This function takes as input four integers representing the numerators and denominators of two fractions, substract the fractions, and returns the nume

#include <stdio.h>
void menu(int *a, int *b, int *c, int *d, char *op);
void addFractions(int a, int b, int c, int d, int *e, int *f);
void subFractions(int a, int b, int c, int d, int *e, int *f);
void mulFractions(int a, int b, int c, int d, int *e, int *f);
void divFractions(int a, int b, int c, int d, int *e, int *f);
void simFractions(int a, int b);
int gcd(int a, int b);/* greatest common divisor */
int lcm(int a, int b);/* least common multiple */
void main()
{
int a,b,c,d,e,f;/* a/b and c/d, b!=0, d!=0 */
char op; /* (+,-,*,/) */

menu(&a,&b,&c,&d,&op);

printf("\n%d/%d%c%d/%d", a, b, op, c, d);

switch(op)
{
case '+':addFractions(a,b,c,d,&e,&f);break;
case '-':subFractions(a,b,c,d,&e,&f);break;
case '*':mulFractions(a,b,c,d,&e,&f);break;
case '/':divFractions(a,b