c++ - 如何将 double 或 float(所有数字)转换为 int？

Question

如何将 double 或 float(所有数字)转换为 int？

例如，如果我有一个 double 0.9332，函数将返回 9332，1.32001 将返回 132001

Answer 1

this will work ! question is similar to this one :
https://stackoverflow.com/questions/5314954/how-to-get-the-length-of-a-numbers-fraction-part

#include <iostream>
#include <math.h>
using namespace std;
int getFractionDigitsCount(float );
int main()
{
    float a=1.9332;
    int p = getFractionDigitsCount(a);
    cout<<"answer is : "<< a * pow(10,p);

    return 0;
}
 int getFractionDigitsCount(float d) {
    if (d >= 1) { //we only need the fraction digits
        d = d - (long) d;
    }
    if (d == 0) { //nothing to count
        return 0;
    }
    d *= 10; //shifts 1 digit to left
    int count = 1;
    while (d - (long) d != 0) { //keeps shifting until there are no more fractions
        d *= 10;
        count++;
    }
    return count;
}