Discussion of array

An array is a group of related data items that share a common name. For instance, we

can define array name salary to represent a set of salary of a group of employees. A particular

value is indicated by writing a number called index number or subscript in brackets after the

array name.

Eg: salary[10]

ONE DIMENSIONAL ARRAY

int number[5];

The values to array elements can be assigned as follows.

Eg:

 number[0] = 35;

number[1] = 40;

number[2] = 20;

This types of array can also be::

1) float height[50];

2) int group[10];

3)char name[10]

STRING - HANDLING FUNCTIONS

Function                                Action

strcat( )                            Concatenates two strings

strcmp( )                         Compares two strings

strcpy( )                          Copies one string over another

strlen( )                          Finds the length of the string

Eg::

Program

/*Illustration of string-handling functions*/

#include<string.h>

main()

{clrscr();

char s1[20],s2[20],s3[20];

int x, l1, l2, l3;

printf(“Enter two string constants \n”);

printf(“?”);

scanf(“%s %s”, s1, s2);

x = strcmp(s1, s2);

if(x != 0)

printf(“Strings are not equal \n”);

strcat(s1, s2);

else

printf(“Strings are equal \n”);

strcpy(s3,s1);

l1 = strlen(s1);

l2 = strlen(s2);

l3 = strlen(s3);

printf(“\ns1 = %s \t length = %d characters \n”,s1, l1);

printf(“\ns2= %s \t length = %d characters \n”,s2, l2);

printf(“\ns3 = %s \t length = %d characters \n”,s3, l3);

}

OUTPUT

Enter two string constants

? New York

Strings are not equal

s1 = New York length = 7 characters

s2 = York length = 4 characters

s3 = New York length = 7 characters