#include<stdio.h>
#include<math.h>
double
fact(int num)
{
if(num==0)
return
1;
else
return
(fact(num-1))*num;
}
main()
{
int
ch,i,neg,c;
float
val=1,x=0;
double
t=0.0,sin=0.0,cos=1.0;
a:
printf("Enter the value of x : ");
scanf("%d",&x);
t=(x*3.14)/180;
printf("\n\t----------Select
your Choice------------\n");
printf("\n\t1.
e^x");
printf("\n\t2.
sin x");
printf("\n\t3.
cos x");
printf("\n\t4.
Exit");
printf("\n\n-----------------------------------------------------\n\n")
printf("\n\nEnter
your Choice : ");
scanf("%d",&ch);
switch(ch)
{
case
1:
for(i=1;i<100;i++)
val+=pow(x,i)/fact(i);
printf("\ne^%f =
%.3f\n",x,val);
break;
case
2:
neg=-1;
for(i=1;i<=20;i++)
{
neg=neg*-1;
sin=sin+((pow(t,i)/fact(i))*neg);
}
printf("\nsin(%f) =
%.3f\n",x,sin);
break;
case
3:
neg=1;
for(i=2;i<=20;i+=2)
{
neg=neg*-1;
cos=cos+((pow(t,i)/fact(i))*neg);
}
printf("\ncos(%f)
= %.3f\n",x,cos);
break;
case
4:
printf("\nEXITED\n");
exit(0);
default:printf("\nINVALID
CHOICE\n");
break;
}
printf("\nDO
YOU WANT TO CONTINUE(Y/N) : \n");
printf("\npress
1 to continue......... : ");
scanf("%d",&c);
if(c==1)
goto
a;
}
/*
---------------OUTPUT---------------
Enter
the value of x : 0
----------Select
your Choice------------
1.
e^x
2.
sin x
3.
cos x
4.
Exit
-----------------------------------------------------
Enter
your Choice : 1
e^0.000000
= 1.000
DO
YOU WANT TO CONTINUE(Y/N) :
press
1 to continue......... : 1
Enter
the value of x : 0
----------Select
your Choice------------
1.
e^x
2.
sin x
3.
cos x
4.
Exit
-----------------------------------------------------
Enter
your Choice : 2
sin(0.000000)
= 0.000
DO
YOU WANT TO CONTINUE(Y/N) :
press
1 to continue......... : 1
Enter
the value of x : 0
----------Select
your Choice------------
1.
e^x
2.
sin x
3.
cos x
4.
Exit
-----------------------------------------------------
Enter
your Choice : 3
cos(0.000000)
= 1.000
DO
YOU WANT TO CONTINUE(Y/N) :
press
1 to continue......... : 1
Enter
the value of x : 0
----------Select
your Choice------------
1.
e^x
2.
sin x
3.
cos x
4.
Exit
-----------------------------------------------------
Enter
your Choice : 6
INVALID
CHOICE
DO
YOU WANT TO CONTINUE(Y/N) :
press
1 to continue......... : 1
Enter
the value of x : 0
----------Select
your Choice------------
1.
e^x
2.
sin x
3.
cos x
4.
Exit
-----------------------------------------------------
Enter
your Choice : 4
EXITED
I have no idea where is the problem but for me it is not working properly.. it alwazs show result just 0
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