10.Executing a C program and some modifications

 

Executing a C program:

1. Open the C-IDE (Integrated Development Environment) by double click on “short cut to tc” which is on desktop.

 

 

 

 

2. To create a new file select File (Alt+F), New (N) [F is the hot key to File option and N is the hot key to New].

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Type the program.

 

 

 

 

 

 

 

 

 

 

 

 

4. Save the program by selecting File (Alt+F), Save (S). or select F2 (It is the short-cut to save option)

Here the name of C program is saved with .c extension. (C automatically takes .c extension if we don’t give)

 

 

 

 

 

 

 

 

 

 

 

 

5. Executing the program.

	Press Ctrl  +  F9 to execute the program

 

 

 

 

6. Viewing the output.

 

 

 

 

 

 

 

 

 

 

1. Output of second execution

 

 

 

 

 

 

 

 

 

Some modifications:

 

The output of first execution is remaining there, even after the completion of second execution. It may be confusing output while experimenting with the program. We can use “clrscr();” to clear the output generated by previous execution.

 

“getch();“ can be used to immediately display the output instead of using Alt+F5 to view the output.

 

In turboc2, writing  #include<stdio.h> at the beginning of the program is not mandatory to use printf(), scanf(), clrscr(), getch(). Because these are the default functions of turboc2 compiler.

 

Modifying the structure of C program (Turboc2 only):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Comparison among the BASIC and C programming:

 

Specification:

Take two numbers and print the sum of them

 

Programs:

	Basic Progam   fir=45 sec=50 sum=fir+sec print sum
			C Progam #include<stdio.h> void main( ) { int fir, sec, sum; clrscr(); fir=45; sec=50; sum=fir+sec; printf(“Sum of two numbers %d”,sum); getch(); }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Specification:

Take the length, breadth of rectangle and print the area, perimeter.

 

Programs:

			C Progam   #include<stdio.h> void main( ) { int l, b, area, peri; clrscr(); l=12; b=34; area=l*b; peri=2*(l+b); printf(“Area of rectangle %d”,area); printf(“\nPerimeter of rectangle %d”,peri); getch(); }
	Basic Progam   l=12 b=34 area=l*b peri=2*(l+b) print area print peri

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Specification:

Take the price, quantity of a product and print the bill.

 

Program:

			C Progam #include<stdio.h> void main( ) { int qty; float price,bill; clrscr(); price=25.75; qty=15; bill=price*qty; printf(“Total bill %f”,bill); getch(); }
	Basic Progam   price=25.75; qty=15; bill=price*qty print bill