Initialization of array in C programming

         Till the array elements are not given any specific values, they are supposed to contain garbage value. The values can be assigned to elements at the time of array declaration, which is called array initialization. The syntax is 

 Storage_class  data_type  array_name[expression]={vaue1, value2, …value n};

        Where, value1 is value of first element, value2 is that of second and so on.

The array initialization is done as given below:

           int a[5]= {1,2,3,5,8};

           int b[]= {2,5,7};

           int c[10]={45,89,54,8,9};

           In first example, a is integer type array which has 5 elements. Their values are assigned as 1, 2, 3, 5, 8 (i.e. a[0]=1, a[1]=2,a[2]=3,a[3]=5 and a[4])=8. The array elements are stored sequentially in separate locations.

            In second example, size of array is not given, it automatically its size as 3 as 3 values are assigned at the time of initialization. Thus, writing int b[]= {2,5,7}; and  int b[3]= {2,5,7}; is same.

           In third example, the size of array c has been set 10 but only 5 elements are assigned at the time of initialization. In this situation, all individual elements that are not assigned explicit initial values will automatically be set to zero. Thus, the value of c[5]=0, c[6]=0 …… c[9]=0.