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In the C programming language, void main() is not a valid signature for the main function. The correct signature for the main() function in C is either int main() or int main(int argc, char *argv[]).
The main() function serves as the entry point of a C program. It is where the execution of the program begins. The int return type indicates that the main() function should return an integer value to the operating system upon completion. By convention, a return value of 0 typically indicates successful execution, while a non-zero value indicates an error or abnormal termination.
Here's a brief explanation of the correct signatures:
int main(): This signature is used when your program doesn't require any command-line arguments. The absence of parameters means that the program doesn't receive any arguments from the command line.
int main(int argc, char *argv[]): This signature is used when your program needs to accept command-line arguments. The argc parameter represents the count of command-line arguments passed to the program, and argv[] is an array of strings containing those arguments.
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