Simple C Calculator

its a simple calculator...it includes, addition, subtraction, multiplication, division, square, cube, and square root..it is simple, yet, powerful...
it's almost at its perfect condition...



#include
#include
#include

main()
{
int a,b,sum,diff,prdct,ch;
double sr;
long sq,cube;
float c,d,ratio;

do
{
clrscr();

printf("\t*****Ruel Pagayon Copyright--2007--04--10--*****");

printf("\n\n\n\t\t*****Simple Calculator*****\n\n");
printf("\t\t**Operations**\n");
printf("\t\t\t*(1)Addition\n");
printf("\t\t\t*(2)Subtraction\n");
printf("\t\t\t*(3)Multiplication\n");
printf("\t\t\t*(4)Division\n");
printf("\t\t\t*(5)Square\n");
printf("\t\t\t*(6)Cube\n");
printf("\t\t\t*(7)SquareRoot\n");

printf("\nEnter the number of your choice: ");
scanf("%d", &ch);

switch(ch)
{
case 1:
printf("\n\t\tEnter two numbers: ");
scanf("%d %d", &a,&b);
sum = a + b;
printf("\n\n\t\tThe Sum is : %d", sum);
break;

case 2:
printf("\n\t\tEnter two numbers: ");
scanf("%d %d", &a,&b);
diff = a - b;
printf("\n\n\t\tThe Difference is : %d", diff);
break;

case 3:
printf("\n\t\tEnter two numbers: ");
scanf("%d %d", &a,&b);
prdct = a * b;
printf("\n\n\t\tThe Product is : %d", prdct);
break;

case 4:
printf("\n\t\tEnter two numbers: ");
scanf("%f %f", &c,&d);
ratio = c / d;
printf("\n\n\t\tThe Quotient is : %f", ratio);
break;

case 5:
printf("\n\t\tEnter a number: ");
scanf("%d", &a);
sq = a * a;
printf("\n\n\t\tThe Square of %d is : %d", a,sq);
break;

case 6:
printf("\n\t\tEnter a number: ");
scanf("%d", &a);
cube = a * a * a;
printf("\n\n\t\tThe Cube of %d is : %d", a,cube);
break;

case 7:
printf("\n\t\tEnter a number: ");
scanf("%d", &a);
sr = sqrt(a);
printf("\n\n\t\tThe SquareRoot of %d is : %f", a,sr);
break;
}
printf("\n\n\n\n\n\t\t\tPress 'x' to quit, any other key to continue\n");
}
while (getch() != 'x');
}





Source : http://www.planetsourcecode.com/vb/scripts/ShowCode.asp?txtCodeId=11387&lngWId=3