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Arithmetic_operationsC
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#include <stdio.h>
int main (void)
{
char a;//Airthmetic operation being performed
int q,w,e,r;//Fraction's numerator and denominator
int i=1;
int fraction1, fraction2;
while (i==1)
{
printf("Give an operation (+,-,*,/) E to stop:");
scanf("%s",&a);
if(a=='E')
break;
else if (a!='+'&& a!='-'&&a!='*'&&a!='/')
{
printf("Invalid operation! Try again.\n");
i=1;
}
else
{ printf("Give values:");
scanf("%d %d %d %d", &q, &w, &e, &r);
i=1;
switch(a)
{
case '+':
if(w==0 || r==0)
{
printf("%d/%d %c %d/%d Invalid expression!",q,w,a,e,r);
}
else
{
fraction2=w*r;
fraction1= q*r+w*e;
if(fraction1<0 && fraction2<0)
{
fraction1=fraction1*-1;
fraction2=fraction2*-1;
}
else if(fraction2<0 && fraction1>0)
{
fraction2=fraction2*-1;
fraction1=fraction1*-1;
}
if(fraction1%fraction2==0){printf(" output: %d/%d %c %d/%d = %d\n",q,w,a,e,r,fraction1/fraction2);}
else{printf(" output: %d/%d %c %d/%d = %d/%d\n",q,w,a,e,r,fraction1,fraction2);}
}
break;
case '-':
if(w==0 || r==0)
{
printf("%d/%d %c %d/%d Invalid expression!",q,w,a,e,r);
}
else
{
fraction2=w*r;
fraction1= q*r-w*e;
if(fraction1<0 && fraction2<0)
{
fraction1=fraction1*-1;
fraction2=fraction2*-1;
}
else if(fraction2<0 && fraction1>0)
{
fraction2=fraction2*-1;
fraction1=fraction1*-1;
}
if(fraction1%fraction2==0){printf(" output: %d/%d %c %d/%d = %d\n",q,w,a,e,r,fraction1/fraction2);}
else{printf(" output: %d/%d %c %d/%d = %d/%d\n",q,w,a,e,r,fraction1,fraction2);}
}
break;
case '*':
if(w==0 || r==0)
{
printf("%d/%d %c %d/%d Invalid expression!",q,w,a,e,r);
}
else
{
fraction2=w*r;
fraction1= q*e;
if(fraction1<0 && fraction2<0)
{
fraction1=fraction1*-1;
fraction2=fraction2*-1;
}
else if(fraction2<0 && fraction1>0)
{
fraction2=fraction2*-1;
fraction1=fraction1*-1;
}
if(fraction1%fraction2==0){printf(" output: %d/%d %c %d/%d = %d\n",q,w,a,e,r,fraction1/fraction2);}
else{printf(" output: %d/%d %c %d/%d = %d/%d\n",q,w,a,e,r,fraction1,fraction2);}
}
break;
case '/':
if(w==0 || e==0)
{
printf("%d/%d %c %d/%d Invalid expression!",q,w,a,e,r);
}
else
{
fraction2=w*e;
fraction1= q*r;
if(fraction1<0 && fraction2<0)
{
fraction1=fraction1*-1;
fraction2=fraction2*-1;
}
else if(fraction2<0 && fraction1>0)
{
fraction2=fraction2*-1;
fraction1=fraction1*-1;
}
if(fraction1%fraction2==0){printf(" output: %d/%d %c %d/%d = %d\n",q,w,a,e,r,fraction1/fraction2);}
else{printf(" output: %d/%d %c %d/%d = %d/%d\n",q,w,a,e,r,fraction1,fraction2);}
}
break;
default:
printf("Incorrect Operator");
}
}
}
}