Fill the red ..... spaces to fix the following C programs.

#include

main() {

char name[20], surname[20];

int stno, age ,count=0;

FILE ......;

FILE *f2;

......=fopen("allstudents.txt", "r");

f2=fopen("olders.txt", "w");

while (............)

{ fscanf(....., "%d %s %s %d",&stno,name,surname,&age);

if(age>25)

{

fprintf(.....,"%d %s %s %d ", stno,name,surname,age);

count++;

}

}

fclose(f1); fclose(f2);

printf("%d student whose age>25 written. ",........);

return 0;

}