程序填空题：给定程序中,函数fun的功能是将参数给定的字符串、整数、浮点数写到文本文件中，再用字符串方式从此文本文件中逐个读入，并调用库函数atoi和atof将字符串转换成相应的整数、浮点数，然后将其显示在屏幕上。#include #include void fun(char *s, int a, double f){/**********found**********/__1__ fp;char str[100], str1[100], str2[100];int a1; double f1;fp = fopen("file1.txt", "w");fprintf(fp, "%s %d %f\n", s, a, f);/**********found**********/__2__ ;fp = fopen("file1.txt", "r");/**********found**********/fscanf(__3__,"%s%s%s", str, str1, str2);fclose(fp);a1 = atoi(str1);f1 = atof(str2);printf("\nThe result :\n\n%s %d %f\n", str, a1, f1);}int main(){ char a[10]="Hello!"; int b=12345;double c= 98.76;fun(a,b,c);return 0;}