It doesn\'t have to be fulfill all the conditions. I\'ve been trying to do this,

Question

It doesn't have to be fulfill all the conditions. I've been trying to do this, but code keeps fail. Really need a help, thanks.

C programming fraction problem a. Daclare a data structure that will contain a rational number b. Write a functions that will add, subtract, multiply and divide rational numbers. In all functions, pass in three parameters, each pointing to a data structure of the type you declared in 'part a'. Use two of the paramaters for the operands, and the third for the result. c. Write a function that takes a pointer to your data structure as a parameter and returns the greatest common divisor of the numerator and denominator d. Use your function from part c to write a function that will reduce a fraction(rational number) to lowest terms. Pass in a pointer to the fraction and have the fraction modified by the func tions. e. Write a input and output functions so that a user can enter a fraction in the form [ ex: 2/3, -5/6, 4/-5, or -12/-33 ] and the output is in the same form. Have your input function check for errors in the input and return a value of -1 in case an error was sensed. The error might consist of a zero denominator as in 3/O, or an error in form as in 4a/5 or 4%5. Both the input function and the output func- tion should take a single pointer to your data structure from part as a parameter f. Combine your functions from parts b through e to write a program that will perform tational number arithmetic for the user. The user should be allowed and the program should output the answer in lowest terms. A sample dialogue is below. The user's input is in color to enter any number of problems, ex: FRACTION ARITHMETIC PROGRAM Enter your problem: 2/3 + 1/5 The answer us 13/15. Another problem (y/n)? y Enter your problem: 4/2 - 5/0 Illegal input Another problem (y/n)? y Enter your problem: 2/93/4 The answer is 1/6. Another problem (y/n)? n Goodbye and thank you

Explanation / Answer

#include <stdio.h>
#include<string.h>
struct fraction
{
int num;
int den;
};
struct fraction add_fraction(struct fraction a, struct fraction b);
struct fraction subtract_fraction(struct fraction a, struct fraction b);
struct fraction multiply_fraction(struct fraction a, struct fraction b);
struct fraction devide_fraction(struct fraction a, struct fraction b);
int main()
{
int i=0;
char ch,op;
char buf[50];
struct fraction a,b,c;
   while(i<4)
       {
       printf("enter your problem ");
       scanf("%[^ ]s",&buf);
       scanf("%c",&op);
       removespaces(buf);
       sscanf(buf,"%d/%d%c%d/%d",&a.num,&a.den,&op,&b.num,&b.den);
      
               if(a.den==0 || b.den==0)
               {
               printf("illegal input ");
               }
           else
           {
           reduce(&a);
           reduce(&b);
           printf("a0=%d b0=%d a1=%d b1=%d c=%c ",a.num,a.den,b.num,b.den,op);
               switch(op)
               {
               case '+': c=add_fraction(a,b);
               break;
               case '-': c=subtract_fraction(a,b);
               break;
               case '*': c=multiply_fraction(a,b);
               break;
               case '/': c=devide_fraction(a,b);
               break;
               default: printf("illegal input ");
               break;
               }
          
           printf("Aswer is %d/%d ",c.num,c.den);
           }
       printf("want to solve another problem..?(y / n) ");
       scanf("%c",&ch);
       if(ch=='n')
       break;
       scanf("%c",&ch);
       i++;
       }
return 0;
}

void removespaces(char buf[])
{
int i=0,j=0;
for(i=0;buf[i];i++)
{
if(buf[i]!=' ')
buf[j++]=buf[i];
}
buf[j]='';
}

void reduce(struct fraction *a)
{
int gcd= find_gcd(abs(a->num),abs(a->den));
a->num/=gcd;
a->den/=gcd;
}

int find_gcd(int a, int b)
{
if(b== 0)
return a;
else
return find_gcd(b,a%b);
}
struct fraction add_fraction(struct fraction a, struct fraction b)
{
struct fraction temp;
temp.num = (a.num * b.den) + (a.den * b.num);
temp.den = (a.den * b.den);
reduce(&temp);
return temp;
}
struct fraction subtract_fraction(struct fraction a, struct fraction b)
{
struct fraction temp;
temp.num = (a.num * b.den) - (a.den * b.num);
temp.den = (a.den * b.den);
reduce(&temp);
return temp;
}
struct fraction multiply_fraction(struct fraction a, struct fraction b)
{
struct fraction temp;
temp.num = (a.num * b.num);
temp.den = (a.den * b.den);
reduce(&temp);
return temp;
}
struct fraction devide_fraction(struct fraction a, struct fraction b)
{
struct fraction temp;
temp.num = (a.num * b.den);
temp.den = (a.den * b.num);
reduce(&temp);
return temp;
}

output:

n

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