What is the main difference between returning value of a function and does not return any value of a function in C. Which is correct void main(void), int main(void), int main(int) , or void main(int) and explain the main difference between int main() and int main(void).
Asked by Mahesh Kondawar Last Modified
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A function may or may not return a value to the calling function. If the function is returning a value, then you have to mention the data type in the function definition and funtion declaration (like int, float or double etc.). If the funtion not returning any value, then you have to mention the data...
read more A function may or may not return a value to the calling function. If the function is returning a value, then you have to mention the data type in the function definition and funtion declaration (like int, float or double etc.). If the funtion not returning any value, then you have to mention the data type as void. If you not mention return type, then compiler take it as int data type. Similary, a function may have arguments or not. If your functions have arguments, then you have to mention data types of arguments. If you are not passing any arguemtns then you may write void or simply live it blank that is depend upon the compiler. main() is a user defined function, so it follows the same rules. read less
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Hi, Thanks for A2A, your 1st question is "What is the main difference between the returning value of a function and does not return any value of a function in C". the main difference between both types of the function will be its return type as the function which will not return any value will have...
read more Hi, Thanks for A2A, your 1st question is "What is the main difference between the returning value of a function and does not return any value of a function in C". the main difference between both types of the function will be its return type as the function which will not return any value will have return type "void" which means nothing wherein function with the return value should have a return type "data type" int, char, struct so ....on..while declaring/defining both !! and one more major difference will be, function with no return type (or can say void return type ) don't need any additional variable to save its return value wherein function with return value may have addition variable or additional check for return value !! now coming to your 2nd question "Which is the correct void main(void), int main(void), int main(int), or void main(int) and explain the main difference between int main() and int main(void)" ans: best practice is to use int main(void) if it does not have command line arguments !! now using void main(void) is fine but gives warning in some compilers as the main function expected to return integer value !! now int main(int) is incorrect !! read less
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Hi,If you use int main() it return something..so we mentioned return 0; if you use void main() --void does not return any values.
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1. Both type of function can exactly the same, only difference is that return type function return some value so it can be used in expression. Non return type function doesn't return any value so it can't be used in expression. 2. The main is also a function so it can be either return type or non return...
read more 1. Both type of function can exactly the same, only difference is that return type function return some value so it can be used in expression. Non return type function doesn't return any value so it can't be used in expression. 2. The main is also a function so it can be either return type or non return type. Return type main function looks like this... int main(void) { return 0; } Non return type main function looks like this... void main(void) { } int main(int) { // This is incorrect... } read less
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Whenever you put return type as int, your program always return success code to operating system which is integer value. If you use void as return type of main then your program does not return any indication to operating system. Returning int is good programming practice always. Hope this help....
read more Whenever you put return type as int, your program always return success code to operating system which is integer value. If you use void as return type of main then your program does not return any indication to operating system. Returning int is good programming practice always. Hope this help. Regard, Sam J www.myVuniversity.com read less
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int main(void) is the good practice, returning int indicates operating system that programs succesfully finished. If we use main(void) it means main fuction can be called without arguments and main() can be called with arguments.
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Int main(void)--- it can be called only with a function call having no parameters. But int main() can be called by a function with any no.of parameters. int main(void) returns 0 if the program is successfully executed. void main(void) does not return anything. it is a good practice to return some...
read more Int main(void)--- it can be called only with a function call having no parameters. But int main() can be called by a function with any no.of parameters. int main(void) returns 0 if the program is successfully executed. void main(void) does not return anything. it is a good practice to return some value in any program to know the succesful execution. read less
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int main() by default returns int value. int main(void) will not return anything
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All four is a valid case. But i think _start not expecting any value so good that return type is void and if we are using command line argument then take argument is good else void is fine.
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