Windows-API-examples/datetime/compare_time.c
2016-02-01 10:06:01 +01:00

52 lines
986 B
C

#include <windows.h>
#include <wchar.h>
int wmain(void) {
SYSTEMTIME st1 = {0};
SYSTEMTIME st2 = {0};
FILETIME ft1 = {0};
FILETIME ft2 = {0};
st1.wYear = 2015;
st1.wMonth = 4;
st1.wDay = 12;
st2.wYear = 2015;
st2.wMonth = 5;
st2.wDay = 12;
int r1 = SystemTimeToFileTime(&st1, &ft1);
if (r1 == 0) {
wprintf(L"Failed to convert system time to file time\n (%d)",
GetLastError());
return 1;
}
int r2 = SystemTimeToFileTime(&st2, &ft2);
if (r2 == 0) {
wprintf(L"Failed to convert system time to file time\n (%d)",
GetLastError());
return 1;
}
short ct = CompareFileTime(&ft1, &ft2);
if (ct == -1) {
wprintf(L"4/12/2015 comes before 5/12/2015\n");
} else if (ct == 0) {
wprintf(L"4/12/2015 is equal to 5/12/2015\n");
} else if (ct == 1) {
wprintf(L"4/12/2015 comes after 5/12/2015\n");
}
return 0;
}