Write a program in C to enter ‘N’ of data using file handling (user choice)

/*user choice data*/
#include<stdio.h>
main()
{
	char name[25];
	int age;
	FILE *fp;
	fp=fopen("c.txt","a");
	printf("Enter name and age of the student:");
	while(scanf("%s%d",&name,&age)!=EOF)
		{
			fprintf(fp,"%s\t%d\n",name,age);
		}
	fclose(fp);
}

Note: Press CTRL + Z (^Z) if you want to stop data entry. It will automatically save into file