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float a[10]; // declare a float array of size 10int i;
// read the second element of the array : a[1]scanf(“%f”,&a[1]);// Assign an expression to the third element of the array
a[2]= a[1] + 5;
To read the value for each element of an array, you should use for statement. For example,
int b[10];int i;
// Read the value for each element of the arrayfor(i = 0; i<10; i++)
{printf(“\n Enter the value of b[%d]”, i);scanf(“%d”,&b[i]);}
In case you do not now the exact number of elements, declare the maximum number of elements and use a variable to store the actual size of the array
int a[100]; // Declare the array with the number of elements not greater than 100int n; // n is the actual size of the array
int i;printf(“\n Enter the number of elements: “);
scanf(“%d”,&n);
for(i = 0; i<n; i++)
{printf("\n a[%d] = ", i);scanf("%d",&a[i]);}
C allow you to associate initializers with specific elements . To specify a certain element to initialize, place its index in square brackets. In other words, the general form of an element designator for array elements is:
int a[4] = {4, 9, 22, 16};float b[3] = {40.5, 20.1, 100};char c[5] = {‘h’, ‘e’, ‘l’, ‘l’, ‘o’};
The first statement is equivalent to four assign statements
a[0] = 4; a[1]= 9; a[2] = 22; a[3]= 16;
printf function are used to print the element of an array. In the following example, we print the element of array a in different ways
#include<stdio.h>#include<conio.h>void main()
{int a[5];int i, k;
// Read the elements of the arrayfor(i = 0; i<5; i++)
{printf(“\n a[%d] = “, i);scanf(“%d”,&a[i]);}
// print the value of element a[3]printf(“\n a[3]= %d”, a[3]);// Display all the elements of array a, each element in a line.
for(i = 0; i<5; i++)
printf(“\n%d”, a[i]);
// Display all the elements of array a in a lineprintf(“\n”); // change to a new line
for(i = 0; i<5; i++)
printf(“%d “, a[i]);
// Display all the elements of array a, k elements in a lineprintf(“\n Enter the value of k = “);
scanf(“%d”,&k);
for(i = 0; i<5; i++)
{printf(“%d “,a[i]);if((i+1)%k == 0) // change to a new line after printing k
//elementsprintf(“\n”);
}getch();
}
here is the sample session with the above program
a[0] = 6a[1] = 14a[2] = 23a[3] = 37a[4] = 9a[3] = 376
1423
379
6 14 23 37 9Input the value of k = 2
6 1423 37
9
The purpose of this function is to find the maximum value stored in the array
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