Arrays With In The Structures

Arrays With In The Structures

 C permits the use of arrays as structure members.we can use single or multidimensional arrays of type int or float.
Ex:   struct marks
      {
        int number;
        float subject[3];
        student[2];
      }
  here,the member subject contains 3 elements,subject[0],subject[1] and subject[2].These elements can be accessed using appropriate subscripts. For example ,the name student[1].subject[2]; would refer to the marks obtained in the third subject by the second student.

 We can use arrays inside the structures. We can use single or multidimensional arrays of type int or float.For example,the following structure declaration is valid.
   struct marks
   {
    int number;
    float subject[3];
   }student[3];

   Here,the member subject contains 3 elements,subject[0],subject[1] and subject[2].These elements can be accessed using subscripts like student[1].subject[2];would refer to the marks obtained in the third subject by the second student.
/*Arrays Within The Structures*/
main()
{
struct marks
{
int sub[3];
int total;
};
static struct marks student[3]={45,67,81,0,75,53,
                                69,0,57,36,71,0};
static struct marks total;
int i,j;
for(i=0;i<=2;i++)
{
for(j=0;j<=2;j++)
{
student[i].total += student[i].sub[j];
total.sub[j] +=student[i].sub[j];
}
total.total +=student[i].total;
}
printf("STUDENT TOTAL \n\n");
for(i=0;i<=2;i++)
printf("student[%d] %d\n",i+1,student[i].total);
printf("SUBJECT TOTAL \n\n");
for(j=0;j<=2;j++)
printf("subject-%d %d\n",j+1,total.sub[j]);
printf("\n Grand Total = %d\n",total.total);
}
OUTPUT:
STUDENT              TOTAL
student[1]        193
student[1] 197
student[1] 164
SUBJECT  TOTAL
subject-1 177
subject-2 156
subject-3 221
Grand Total          =554