why the execution starts from main function
Answers were Sorted based on User's Feedback
Answer / ravi joshi
As many of them have answered here, main is a special
function in C/C++ programs. The compiler does not care if
you have defined main or not, but linker does. If linker
finds main defined in the objects being linked, then the
address of main function is placed at the top of execution
stack. And automatically when loader loads the
program/process, the main function gets loaded at the top of
execution stack, and system starts execution using
__crtmain() which internally calls main() of the program/process
Is This Answer Correct ? | 16 Yes | 1 No |
Answer / vignesh1988i
it is the first function to be called or to be executed in
the code of the compiler.......
thank u
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / vignesh1988i
their will be a program written for creating a
compiler..... so in that main() may be a first function call
for that coding written in compiler
thank u
Is This Answer Correct ? | 7 Yes | 0 No |
Answer / rahat
main is a special inbuilt function which is used to start
the execution of the program,and the compiler searches for
this function to start the execution of the program.
Is This Answer Correct ? | 6 Yes | 2 No |
Answer / vamsi
the main function receives command line arguments and so if
v pass any command line arguments as in put they have to b
taken and executed for this reason the execution starts from
main
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / vrushali
The c run time system inserts some start up code before the
main function and inserts some clean up code at the end of
the program .
The operating system loads the executable of the program in
to the memory with the help of the loader and transfers the
control to theprogram .
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / vrushali
If the execution of a program is required to start from a
test program e.g test (). Then we are required to change the
linker itself. As there a default program which searches for
main .
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / rambo
in general _startup is handler for reset vector(0xffff in
freescale) _startup function calls main function.
if u replace main() with ur own function then the system
call ur function.
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / abhradeep chatterjee
when c compiler searches for the beginning of the program,
then it looks for the main function.
Is This Answer Correct ? | 2 Yes | 4 No |
What are the different data types in C?
Why clrscr is used in c?
what is event driven software and what is procedural driven software?
Print all the palindrome numbers.If a number is not palindrome make it one by attaching the reverse to it. eg:123 output:123321 (or) 12321
what is a function method?give example?
What are local variables c?
Is it possible to run a c program without using main?If yes HOW??
if we take a number as a char then can we manipulate(add, subtract) on this number
a c variable cannot start with a) an alphabet b) a number c) a special symbol d) both b and c above
What is the right way to use errno?
what is the purpose of the code, and is there any problem with it. bool f( uint n ) { return (n & (n-1)) == 0; }
Rapunzel walks into the forest of forgetfullness. She meets a Lion who lies on Monday Tuesdays and Wednesdays and meets a rabbit who lies on Thurs fridays and saturdays . On that day both say that "I lied yesterday". What day is it .