Double
(or) Two dimensional arrays
If
the Array name followed by two subscripts then it is called two dimensional
arrays.
Declaration of
Two dimensional arrays:
The
general format of a two dimensional array is:
Syntax: datatype
ArrayName[size1][size2];
Where,
- datatype
specifies the type of the elements that will be stored in the array.
- ArrayName
specifies the name of the array that follows rules as a valid identifier.
- size1specifies
row size i.e., number of rows.
- size2specifies column size i.e., number of columns
Example: int
a[3][4];
For this, memory allocation will be:
INITIALIZATION OF DOUBLE DIMENSIONAL ARRAYS
Two dimensional arrays can be
initialized into two different ways. Those are
1. Direct initialization
2. Through program execution
Direct
initialization:
1) Like one-dimensional arrays, double
dimensional arrays can also be initialized by placing a list of values enclosed
within braces as:
Syntax: datatype ArrayName[size1][size2] =
{List of Values};
Here, List of Values is separated
by comma operator.
Example: int a[2][3] = {10,20,30,40,50,60};
Through program
execution:
/* PROGRAM TO READ A DOUBLE DIMENSIONAL ARRAY AND
PRINT IT */
main()
{
int
m,n,i,j,a[10][10];
clrscr();
printf("\nEnter
the row size:");
scanf("%d",&m);
printf("\nEnter
the column size:");
scanf("%d",&n);
printf("\nEnter
the Array Elements:");
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("\nArray
Elements Are:");
for(i=0;i<m;i++)
{
printf("\n");
for(j=0;j<n;j++)
{
printf("%5d",a[i][j]);
}
}
}
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