Question

#include <string.h>
#include <stdio.h>
#include <windows.h>
#include <wchar.h>
#include <unistd.h>
#define sleep(x) Sleep(1000 * x)

int checkTime();

int main ( int argc, char *argv[] ) { 

    char *getFirstArgument = argv[1];
    char *getSecondArgument = argv[2];
    char getCheckTime;

    checkTime(&getCheckTime);

    if(*getFirstArgument != getCheckTime) {
        sleep(1);
        main(*getFirstArgument);
    } else if(*getFirstArgument == getCheckTime && *getSecondArgument == 'r') {
        system("shutdown /r");
    } else if(*getFirstArgument == getCheckTime) {
        system("shutdown /s"); 
    }

    return 0;

}

int checkTime() {

    char getConvertedTime[5] = {};

    SYSTEMTIME localTime;
    GetLocalTime ( &localTime );

    sprintf( getConvertedTime, "%d:%d", localTime.wHour, localTime.wMinute );
    printf( "%s\n", getConvertedTime );

    return 0;

} 

Hi! I don’t know what arguments I need to put when I recall main function, and I really can’t find the answer, I know it’s exist somewhere. 🙂 And here is the error what show me the MinGW compiler.

$ gcc -Wall test.c -o test.exe 
test.c: in function 'main':
test.c:20:3: error: to few arguments to function 'main'
test.c:10:5: note: declared here

Sorry for my bad english! Thank you!

Answer 1

Instead of calling main() after 1 second to create some sort of loop to wait for a specified amount of time, you can use an actual loop! Try something like this:

checkTime(&getCheckTime);
while(*getFirstArgument != getCheckTime) {
    sleep(1);
    checkTime(&getCheckTime);
}

// Do something after the provided time
if(*getSecondArgument == 'r') {
    system("shutdown /r");
} else {
    system("shutdown /s"); 
}

Furthermore, I do not really understand what you are planning to do. So the snippet above will not likely fix your complete program.