Why does execution of a program in C/C++/Java start from only main?

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Jaimeen Rana

MBA Graduate

Main function is calling the other functions of he program and compiler gets this direction while Compiling the code. If it does not find main function then it will also not find the other functions in the code. So, main is required in C program.
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B.Tech tutor for IIT JEE Mains and 12 board - Maths & Physics.

There has to be a MASTER function, which controls all other functions. main is that master function in each programming language.
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Oracle, Hindi, C++, C, MS Office, VBScript,JavaScript,Spoken English etc with 32 years of experience

Because the languages have defined that main() be their entry point. Suppose they left it ambiguous, then you’d have to specify somewhere that method {x} is your starting point which is the same as having a main program which could call that method {x}.
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Expert Technical Trainer with 15 years of work experience

C programs are based on functions and C++ are based on objects. C++ programs can begin with access specifiers where the C++ program does not begin with main
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C++ Programming(C/JAVA)

To get this question you need to know the process to which a program go through during compilation, using preprocessor directives all the libraries in header files are opened up and now to implement all of them we need a programming are where a programmer can code, that area/scope is termed as main function.Main(...
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To get this question you need to know the process to which a program go through during compilation, using preprocessor directives all the libraries in header files are opened up and now to implement all of them we need a programming are where a programmer can code, that area/scope is termed as main function.Main( ) is like a trunk to a tree(i.e. program),from where we can access all the library components including the stem of the tree(i.e. predefined/userdefined functions). Happy Programming Regards Sachin read less
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Microsoft Certified Trainer with 12+ years of experience in IT Training

because all these languages are defined in such a way that the main function will be the entry point for the program execution.
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Tutor

the main method is an entry point for the compiler. In Java When class is loaded JVM is looks for main class.
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Assistant Professor

Because the languages have defined that main() be their entry point. Suppose they left it ambiguous, then you’d have to specify somewhere that method {x} is your starting point which is the same as having a main program which could call that method {x}.
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Because the languages have defined that main() be their entry point. Suppose they left it ambiguous, then you’d have to specify somewhere that method {x} is your starting point which is the same as having a main program which could call that method {x}. Would you rather write code that just starts...
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Because the languages have defined that main() be their entry point. Suppose they left it ambiguous, then you’d have to specify somewhere that method {x} is your starting point which is the same as having a main program which could call that method {x}. Would you rather write code that just starts up some random function? Or do you have a better alternative? If not, then there is no point to this question? read less
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It Professional Trainer With 20 Years of Experience in in Key Aspects of Software Development

main is an entry point (like a main door) for your code written in C / C++ /Java/C# . So without main the code cannot be executed.
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