//*****(F-3)*****
largeInt addl(largeInt ia1,largeInt ia2) // ADDITION
{
largeInt iresult,ik1,ik2;
largeNum result,a1,a2;
if(equal_to_zero(ia1) && equal_to_zero(ia2))
{
iresult.sign=0;
iresult.len=1;
iresult.line[0]='0';
return(iresult);
}
else
{
if( (ia1.sign==0 && ia2.sign==1) || (ia1.sign==1 && ia2.sign==0) )
{
ik1=absl(ia1);
ik2=absl(ia2);
iresult=subl(ik1,ik2);
if(greaterthan(ik1,ik2)==1)
{
iresult.sign=ia1.sign;
}
else
{
iresult.sign=ia2.sign;
}
}
else if(ia1.sign==1 && ia2.sign==1)
{
IntToNum(ia1,&a1);
IntToNum(ia2,&a2);
result=add_pos(a1,a2);
NumToInt(result,&iresult);
iresult.sign=1;
}
else
{
IntToNum(ia1,&a1);
IntToNum(ia2,&a2);
result=add_pos(a1,a2);
NumToInt(result,&iresult);
}
if(equal_to_zero(iresult))
{
iresult.sign=0;
iresult.len=1;
iresult.line[0]='0';
}
return iresult;
}
}
//*****(F-4)*****
largeInt multl(largeInt ia1,largeInt ia2)// For multiplying any +ve/-ve numbers
{
largeInt iresult;
largeNum multiplicand,multiplier,result,temp,a1,a2;
int k,i,j,n;
if(equal_to_zero(ia1) || equal_to_zero(ia2))
{
iresult.sign=0;
iresult.len=1;
iresult.line[0]='0';
return(iresult);
}
else
{
IntToNum(ia1,&a1);
IntToNum(ia2,&a2);
if(Ngreaterthan(a1,a2)==1)
{
multiplicand=a1;
multiplier=a2;
}
else
{
multiplicand=a2;
multiplier=a1;
}
k=multiplier.len-1;
for(i=k;i>=0;i--)
{
n=multiplier.line[i];
if(i==k) // multiplication for the left most term of multiplier
{
result=add_n_times(multiplicand,n);
}
else
{
temp=add_n_times(multiplicand,n);
temp.len+=(k-i); //decides number of zeroes to be appended
for(j=1;j<=k-i;j++)
temp.line[(temp.len)-j]=0;
result=add_pos(result,temp);
}
}
if((multiplicand.sign==0 && multiplier.sign==1) || (multiplicand.sign==1 && multiplier.sign==0))
result.sign=1;
else
result.sign=0;
NumToInt(result,&iresult);
return iresult;
}
}
int main()
{void greater_than_zero(float,float);
void equal_to_zero(float,float);
void smaller_than_zero(float,float);
float a,b,c;
printf("input a,b,c:");
scanf("%f,%f,%f",&a,&b,&c);
printf("equation: %5.2f*x*x+%5.2f*x+%5.2f=0\n",a,b,c);
disc=b*b-4*a*c;
printf("root:\n");
if (disc>0)
{
greater_than_zero(a,b);
printf("x1=%f\t\tx2=%f\n",x1,x2);
}
else if (disc==0)
{equal_to_zero(a,b);
printf("x1=%f\t\tx2=%f\n",x1,x2);
}
else
{smaller_than_zero(a,b);
printf("x1=%f+%fi\tx2=%f-%fi\n",p,q,p,q);
}
return 0;
}
//*****(F-2)
largeInt subl(largeInt ia1, largeInt ia2) // For substracting any +ve/-ve numbers
{
int i,k,d;
largeNum result,a1,a2;
largeInt iresult;
if(equal_to_zero(ia1) && equal_to_zero(ia2))
{
iresult.sign=0;
iresult.len=1;
iresult.line[0]='0';
return(iresult);
}
else
{
IntToNum(ia1,&a1);
IntToNum(ia2,&a2);
if(a1.sign==1 && a2.sign==0)
{
result=add_pos(a1,a2);
result.sign=1;
NumToInt(result,&iresult);
return(iresult);
}
else if(a1.sign==0 && a2.sign==1)
{
result=add_pos(a1,a2);
result.sign=0;
NumToInt(result,&iresult);
return(iresult);
}
else
{
if(greaterthan(ia1,ia2)==1)
{
d=a1.len-a2.len;
shift(&a2,d);
k=a1.len-1;
for(i=k;i>=0;i--)
{
if(a1.line[i]<a2.line[i])
{
result.line[i]=(a1.line[i]+10)-a2.line[i];
a2.line[i-1]++;
}
else
{
result.line[i]=a1.line[i]-a2.line[i];
}
}
result.len=a1.len;
if(a1.sign==0&&a2.sign==0)
result.sign=0;
else
result.sign=1;
rem_all_zeros_from_left(&result);
NumToInt(result,&iresult);
if(equal_to_zero(iresult))
{
iresult.sign=0;
iresult.len=1;
iresult.line[0]='0';
}
return(iresult);
}
else
{
d=a2.len-a1.len;
shift(&a1,d);
k=a2.len-1;
for(i=k;i>=0;i--)
{
if(a2.line[i]<a1.line[i])
{
result.line[i]=(a2.line[i]+10)-a1.line[i];
a1.line[i-1]++;
}
else
{
result.line[i]=a2.line[i]-a1.line[i];
}
}
result.len=a2.len;
if(a1.sign==0&&a2.sign==0)
result.sign=1;
else
result.sign=0;
rem_all_zeros_from_left(&result);
NumToInt(result,&iresult);
if(equal_to_zero(iresult))
{
iresult.sign=0;
iresult.len=1;
iresult.line[0]='0';
}
return(iresult);
}
}
}
}