代码：
#include <unistd.h>
#include <iostream>
#include <string>
#include <iomanip>
/*设置必备的头文件*/
using namespace std;
void print_process(string strName, float fValue, bool flag = false)
{
if(0>fValue || fValue>1)
{
cout << "进度参数必须大于0且小于1" << endl;
return;
}
fValue = fValue*100;
cout<<setiosflags(ios::fixed)<<setprecision(2); //设置出书的小数后精度为2
string tag = "["+strName+"]"+"process:"+string((fValue/10), '*')+"[";
// flush擦除，
定位到行首
cout << flush << '
' << tag << fValue << "%]";
if(flag)
{
usleep(1000); //1000us
}
}
int main() {
for(int i = 0; i <=12345; i++) {
// flush擦除，
定位到行首
float f = (float)i/12345.0;
print_process("mytest",f,true);
}
cout << endl;
cin.get();
return 0;
}