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POCalculator for fractions using classes
 

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  1. POCalculator for fractions using classes
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    <p>I want to create a four functions (+,-,/,*) calculator for fractions using classes .There is something wrong with the getinf function, whenever i call it it always returns the same value in the main function. I cant figure out the what is causing this.</p> <pre><code>#include&lt;iostream&gt; #include&lt;conio.h&gt; #include&lt;cmath&gt; #include&lt;process.h&gt; using namespace std; class frac{ long num,dum; public: void getinf(){ cout&lt;&lt;"Enter the fraction = "; cin&gt;&gt;num&gt;&gt;dum; if(cin.fail()) { cout&lt;&lt;"Invalid data entered. "&lt;&lt;"\nTry again. ";getch();exit(0); } } frac add(frac f1,frac f2){ frac f3; f3.num=((f1.num*f2.dum)+(f1.dum*f2.dum)); f3.dum=f1.dum*f2.dum; return f3; } frac sub(frac f1,frac f2){ frac f3; f3.num=((f2.num*f2.dum)-(f1.dum*f2.dum)); f3.dum=f1.dum*f2.dum; return f3; } frac mul(frac f1,frac f2){ frac f3; f3.num=f1.num*f2.num; f3.dum=f1.dum*f2.dum; return f3; } frac div(frac f1,frac f2){ frac f3; f3.num=f1.num*f2.dum; f3.dum=f1.dum*f2.num; return f3; } void lowterm(){ long tnum,tdum,temp,gcd; tnum=labs(num); tdum=labs(dum); if(tdum==0) { cout&lt;&lt;"Illegal fraction division by 0";exit(1); } else if(tnum==0) { num=0;dum=1;return; } while(tnum!=0){ if(tnum&lt;tdum) { temp=tnum;tnum=tdum;tdum=temp; } tnum=tnum-tdum; } gcd=tdum; num=num/gcd; dum=dum/gcd; } void showinf(){ cout &lt;&lt;"The result is "&lt;&lt;num&lt;&lt;"/"&lt;&lt;dum;getch(); } }; void main(){ frac s1,s2,s3;char ch = 'a' ; s1.getinf(); s2.getinf(); cout&lt;&lt;"Enter the function you want to perform on the fractions (+,-,*,/): "; cin&gt;&gt;ch; if(cin.fail()){ cout&lt;&lt;"Invalid operation entered. "&lt;&lt;"\nNo such operation exist. " &lt;&lt;"\nTry again. "; getch(); exit(0); } switch(ch){ case'+':s3.add(s1,s2);break; case'-':s3.sub(s1,s2);break; case'*':s3.mul(s1,s2);break; case'/':s3.div(s1,s2);break; default:cout&lt;&lt;"Wrong information entered. "&lt;&lt;"\nTry again. "; } s3.lowterm(); s3.showinf(); getch(); } </code></pre>
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    1. USshujah kiani
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    1. COMat can you explain a little bit more. I am trying to get numerator and denominator for from the user for fraction s1. Is there anything wrong in syntax ?
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      1. USshujah kiani
    2. COSorry, misread one of your functions. getinf is ok.
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      1. USMat
 

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