Maths operation exp, log, log10, sqrt, sin, cos, tan.....

 Mathematical operation program for the determination of values of:
1.exp     2.log       3.log10
4.sqrt    5.sin        6.cos
7.tan

note: use of Switch case for easy coding and choice selection between several option.

Source Code:-

#include<iostream.h>
#include<conio.h>
#include<math.h>
void main()
{clrscr();
 int choice;double arg,arg1,arg2,arg3,num,num1,num2;
 cout<<"Mathematical Operation by-Tarun Rawat\n";again:
 cout<<"\n1=exp   (eg:e^2)\n2=log   (eg:log(1))";
 cout<<"\n3=log10 (eg:log10(1))\n4=sqrt  (eg:sqrt(81))\n5=sin\n6=cos\n7=tan\n";
 cout<<"\nEnter cHOICE: ";
 cin>>choice;
 switch(choice)
 {case 1: cout<<"\nEnter power of e :";
 cin>>arg;
 cout<<"\nValue is: "<<exp(arg);break;
  case 2: cout<<"\nEnter value of log :";
 cin>>num;
 cout<<"\nValue is: "<<log(num);break;
  case 3: cout<<"\nEnter value of log10 :";
 cin>>num1;
 cout<<"\nValue is: "<<log10(num1);break;
  case 4: cout<<"\nEnter value for sqrt :";
 cin>>num2;
 cout<<"\nValue is: "<<sqrt(num2);break;
  case 5: cout<<"\nEnter value of sin in radian :";
 cin>>arg1;
 cout<<"\nValue is: "<<sin(arg1);break;
  case 6: cout<<"\nEnter value of cos in radian :";
 cin>>arg2;
 cout<<"\nValue is: "<<cos(arg2);break;
  case 7: cout<<"\nEnter value of tan in radian :";
 cin>>arg3;
 cout<<"\nValue is: "<<tan(arg3);break;
  default:cout<<"\nWrong Choice\n";goto again;
}
getch();
}