Exercise 8-1 Splitting the integer and decimal parts of a real number (15 points)

This question requires the realization of a simple function that splits the integer and decimal parts of a real number.

Function interface definition:

void splitfloat( float x, int *intpart, float *fracpart );

Among them xare the real number to be split (0≤ x<10000), *intpartand *fracpartare the integer part and the decimal part of the real number x , respectively.

Sample referee test procedure:

#include <stdio.h>

void splitfloat( float x, int *intpart, float *fracpart );

int main()
{
    
    
    float x, fracpart;
    int intpart;

    scanf("%f", &x);
    splitfloat(x, &intpart, &fracpart);
    printf("The integer part is %d\n", intpart);
    printf("The fractional part is %g\n", fracpart);

    return 0;
}

/* 你的代码将被嵌在这里 */

Input sample:

2.718

Sample output:

The integer part is 2
The fractional part is 0.718

answer:

void splitfloat( float x, int *intpart, float *fracpart )
{
    
    
	 *intpart = (int) x; //double强转int会把后面的后面小数点的数直接舍去(大转小 数会变小) int 2.718 结果是2
	 *fracpart = x - (int)x; 
}