C Language - Important Concepts part -2

O LEVEL-PAPER 3rD -- M3-R4

C   LANGUAGE 

SOME IMPORTANT CONCEPTS

FOLLWING STEPS TO EXECUTE A PROGRAM--

STEP 1  DOUBLE CLICK ON PROGRAM STORE IN HARD DISK.

STEP 2 AFTER DOUBLE CLICK ON PROGRAM , A XEROX COPY OF PROGRAM FROM HARD DISK COME INTO RAM MEMORY.

STEP 3 NOW RAM SEND EVERY SINGLE INSTRUCTION WRITTEN IN PROGRAM TO PROCESSOR MAIN UNIT.

STEP 4 NOW MAIN UNIT SEND EACH INSTRUCTION TO CONTROL UNIT.

STEP 5 IF INSTRUCTON WRITTEN IN PROGRAM IS ALU TYPE THAN CU SEND TO ALU.

STEP 6 THIS PROCESS REPEATED UNTIL ALL THE INSTRUCTION WRITTEN IN PROGRAM IS NOT EXECUTED . 

FOLLOWING STEPS TO SOFTWARE DEVELOPMENT IN C--

STEP 1  PROGRAM IS WRITTEN IN C LANGUAGE I.E sum.c

STEP 2  NOW COMPILE THE PROGRAM BUT WHILE COMPILER COMPILING 

THE PROGRAM ONE MORE  FUNCTION IS GOING TO PERFORM 

AUTOMATICALLY I.E PREPROCESSOR.

STEP 3 PREPROCESSOR CONVERT THE C LANGUAGE FILE I.E sum.c INTO 

sum.i WITH HELP OF HEADER FILES(In header files, all the codes related 

to program are written).

STEP 4  NOW AFTER  CONVERTING THE FILE INTO sum.i PREPROCESSOR 

SEND TO COMPILER .

STEP 5 NOW COMPILER CONVERT sum.i INTO sum.obj AND SEND 

TO LINKER.

STEP 6 NOW LINKER CONVERT INTO sum.exe FILE(i.e Linker develop the software )

WITH OF LIBRARY FILES