问为进程计时(Windows 7 DOS提示符)

EN

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <process.h>
#include <malloc.h>
#include <string.h>
#if defined(WIN32) || defined(_WIN32)
#include <windows.h>
#else
#include <dos.h>
#endif

int main(void) {

    clock_t start, end;
    char *cmd;
#ifdef WIN32
    char *cmd_line = strdup(GetCommandLine());
#else
    char *cmd_line = 0x80;
#endif
    int seconds, tenths;
    char seps[] = " \r\n\t/";

    _heapmin();

    strtok(cmd_line, seps);

    cmd_line = strtok(NULL, "");

    start = clock();
    system(cmd_line);
    end = clock();

    cmd = strtok(cmd_line, seps );

    seconds = (end-start) / CLOCKS_PER_SEC;
    tenths = (end-start) / ( CLOCKS_PER_SEC / 10 );
    tenths -= seconds * 10;

    fprintf(stderr, "\n`%s' took %d.%d seconds.\n", cmd, seconds, tenths);
    return 0;
}