<b>若何单步履行外部程序</b>[VC/C++编程]

for c++builder,用于vc应当把消息框改一下便可以了
void contour(void){
char ln[100];
　 int make;
　 char str[100]="";
　 char *tip="不能履行:";
sprintf(ln,"%s\\%s",getcurrentdir(),"watson.exe");
char path[100];
sprintf(path,"%s",getcurrentdir());
chdir(path);
//showmessage(ln);
　 startupinfo startinfo;
　 process_information procinfo;
　 strcat(str,tip);
　 strcat(str, ln);
　 getstartupinfo(&startinfo);
　 startinfo.dwflags =startf_useshowwindow;
　 startinfo.wshowwindow=sw_hide ;
　 make=createprocess(null,ln,null,null,false,0,null,null,&startinfo,&procinfo);
　 if (!make)
　 {
　 messagebox(null, str, "提醒", mb_ok);
　 }
　 waitforsingleobject(procinfo.hprocess, infinite);
}