{
char name[50];
int height;
};
int main(){
struct s a[5],b[5];
FILE *fptr;
int i;
fptr=fopen("file.txt","wb");
for(i=0;i<5;++i)
{
fflush(stdin);
printf("Enter name: ");
gets(a[i].name);
printf("Enter height: ");
scanf("%d",&a[i].height);
}
fwrite(a,sizeof(a),1,fptr);
fclose(fptr);
fptr=fopen("file.txt","rb");
fread(b,sizeof(b),1,fptr);
for(i=0;i<5;++i)
{
printf("Name: %s\nHeight: %d",b[i].name,b[i].height);
}
fclose(fptr);
}
C Programming Enumeration
Enumeration type allows programmer to define their own data type . Keyword enum is used to defined enumerated data type.
enum type_name{ value1, value2,...,valueN };
Here, type_name is the name of enumerated data type or tag. And value1, value2,....,valueN are values of typetype_name.
By default, value1 will be equal to 0, value2 will be 1 and so on but, the programmer can change the default value as below: enum suit{
club=0;
diamonds=10;
hearts=20;
spades=3;
};
Declaration of enumerated variable
Above code defines the type of the data but, no any variable is created. Variable of type enum can be created as:
enum boolean{
false;
true;
};
enum boolean check;
Here, a variable check is declared which is of type enum boolean.
Example of enumerated type
#include <stdio.h>
enum week{ sunday, monday, tuesday, wednesday, thursday, friday, saturday};
int main(){
enum week today;
today=wednesday;
printf("%d day",today+1);
return 0;
}