在visual studio 输出窗口里打印日志

#include "atlstr.h"
#include <time.h>
#include <Windows.h>

void OutputDebugPrintf(const char* strOutputString,...)
{
	char strBuffer[4096]={0};
	va_list vlArgs;
	va_start(vlArgs, strOutputString);

	_vsnprintf_s(strBuffer, sizeof(strBuffer)-1, strOutputString, vlArgs);
	va_end(vlArgs);
	OutputDebugString(CA2W(strBuffer));
}

int main(int argc, char* argv[])
{
	int i = 10;
	clock_t tick1,tick2;
	double dt;

	tick1 = clock(); //ms

	OutputDebugPrintf("I'm %d years old.\n", i);
	Sleep(10);

	tick2 = clock();

	dt = (double) (tick2 - tick1);
	OutputDebugPrintf("dt = %lf ms\n",dt);

	while (1) {};
	return 0;
}