Subject : Structured Programming Approach

Title : Arrays, String, Structures and Union

Marks : 10M

C library supports a large number of string-handling functions that can be used to carry out many of the string manipulation activities. Following are the most commonly used string-

if(strcmp(a,b)>0)
printf("%s string is greater",a);
else
printf("%s string is greater",b);
getch();

The strcat function joins two strings together. It takes the following form

strcat( string1,string2); 
Eg: strcat(part1, “GOOD”); 
strcat(strcat(string1,string2),string3);

Here three strings are concatenated and the result is stored in string1.

strcmp( ) Function

It is used to compare two strings identified by the arguments and has a value 0 if they are equal. It takes the form:

strcmp(string1,string2);

Eg: 1) strcmp(name1,name2);

2) strcmp(name1,”john”;

3) strcmp(“ram”, “rom”);

strcpy( ) Function

This function works almost like a string assignment operator. It takes the form

strcpy(string1,string2);

This assigns the content of string2 to string1.

Eg: 1) strcpy(city, “DELHI”);

2) strcpy(city1,city2);

strlen( ) Function This function counts and returns the number of characters in a string.

n = strlen(string);