Real number rounding and writing to file (C language file)

Title requirements: There are several real numbers in the file f1.txt, please read them out separately, and save each real number into the file f2.txt after rounding up.Try to write the corresponding program.

Thinking:

1. Open file f1,
2. Read in real numbers,
3. Split the integer and fractional parts of a real number,
4. The fractional part is compared to 0.5,
5. The integer part is adjusted accordingly and written to file f2.

File content after running:

f1.txt (enter by yourself)	f2.txt (system generated after running)

Source program:

#include#includevoid splitfloat(double x,int *intpart,double *fracpart){*intpart=(int)x;//Force cast to integer*fracpart=x-*intpart;//Subtract the integer part directly to get the fractional part}int main(void){FILE *fp1,*fp2;int intpart;//x=345.89, the fractional part is 0.890015double z,fracpart,a;//x=123.456, the fractional part will be output as 0.456001if((fp1=fopen("f1.txt","r"))==NULL){printf("Failed to open file f1!");exit(0);}if((fp2=fopen("f2.txt","w"))==NULL){printf("Failed to open file f2!");exit(0);}while(!feof(fp1)){fscanf(fp1,"%lf",&z);//Readif(z!=EOF){splitfloat(z,&intpart,&fracpart);//Split integer and fractional parts// printf("Integer part: %d\n Fractional part: %lf\n",intpart,fracpart);//Help checkif(fracpart>=0.5){//The fractional part is rounded upintpart=intpart+1;// printf("Integer part: %d\n Fractional part: %lf\n",intpart,fracpart);//Help check}fprintf(fp2,"%d\n",intpart);}}return 0;}

The original title of splitting the integer and fractional parts of a real number:

Requires a custom function void splitfloat ( float x , int * intpart , float * fracpart ), where x is the real number to be split, * intpart and * fracpart are the integer part and the fractional part of the real number x split respectivelypart.Write the main function and call the function splitfloat() in it.

Source program:

#include//Exercise 8.1 Split the integer and fractional parts of real numbersvoid splitfloat(float x,int *intpart,float *fracpart){*intpart=(int)x;//Force cast to integer*fracpart=x-*intpart;//Subtract the integer part directly to get the fractional part}main(void){float x,fracpart;//x=123.456, the fractional part will be output as 0.456001int intpart;//x=345.89, the fractional part is 0.890015printf("Enter x:");scanf("%f",&x);splitfloat(x,&intpart,&fracpart);printf("Integer part: %d\nDecimal part: %lf",intpart,fracpart);return 0;}