C language - String

 

String

 

Strcpy(S2 ,S1) -  String Copy

^{s2 copy the s1 string}

^{S2- Destination}

^{S1-   Source}

^S1-"hai"

Strcpy(S2 ,S1)   

output

hai

^{Strcat(S1,S2) - String Concatenation}

String Concatenation will add two strings

^{s1 - "hello"}

^{s2 - "world"}

^output

^helloworld

^{Strcmp(S1,S2) - String Compare}

^{compare two string ,if the two strings are equals the output will be 0.}

^{s1 - "Hello"}

^{s2 - "hello"}

^output

1

^{s1 - "hello"}

^{s2 - "hello"}

^output

0

^{Strchr(S1,Ch) - String character}

^{s1- "hai"}

^{ch- "a"}

^output

 ^found

^{Strcmpi(S1,S2) - String compare ignore case}

^{string will compare ignores capital and small letter.}

^{only check the words are equal.}

^{s1 - "Hello"}

^{s2 - "hello"}

^output

0

^{M=Strlen(S1)  - String length}

^{check how many letters presents in s1}

^s1-"hello"

^output

⁵

^{Strlwr(S1) - String lower}

^{s1- "HELlo"}

^output

^hello

^{Strupr(S1) - String upper}

^{s1- "hello"}

^output

^HELLO

^{Strstr(S1,S2) - String string}

^{s1- "hello world"}

^{s2 - "hello"}

^output

^{found hello}

 

^{strrev (string reverse)}

s1="hello"

Output

strrev(s1) = olleh

^Example

 

^{Using Strcpy()Function:}

^{/*To Copy The String From One Variable To Another Variable*/}

^{#include<stdio.h>}

#include<conio.h>

^{#include<string.h>}

^main()

^{

^{char name [30],str[30];}

^clrscr();

^{printf("Enter your name:");}

^gets(name);  

^{strcpy(str,name);}

^{printf("The copied string is:%s",str);}

^getch();

^}

 

^output:

^{Enter the name: meenakshi}

^{The copied string is:meenakshi}

^{using strlen() & strrev() functions}

^{/* To find the length of the string and reverse the string */}

^{#include<stdio.h>}

#include<conio.h>

^{#include<string.h>}

^main()

^{

^{char name[30];}

^{int len;}

^clrscr();

^{printf("Enter your name:");}

^gets(name);

^{len=strlen(name);}

^{strrev(name);}

^{printf("The length of the string is:%d\n",len);}

^{printf("The reversed string is:%s",name);}

^getch();

^}

^output:

^{Enter the name:Bharathi}

^{The length of the string is:8}

^{The reversed string is: ihtarahB}

 

 

^{Using strcpy(),strcmp() & strrev() Functions}

^{/To Find the program whether the given string is Palindrome or not palindrome*/}

^{#include<stdio.h>}

#include<conio.h>

^{#include<string.h>}

^main()

^{

^{char name[30],string[30],reverse[30];}

^clrscr();

^{printf("Enter your name:");}

^gets(name);

^{strcpy(string,name);}

^{strcpy(reverse,strrev(name));}

^{if(strcmp(string,reverse)==0)}

^{

^{printf("the string %s is Palindrome",string);}

^}

^else

^{

^{printf("the string%s is not Palindrome",string);}

^}

^getch();

^}

^output1:

^{Enter your name: sudharsana}

^{the string Sudharsana is not palindrome}

^{output 2:}

^{Enter your name:madam}

^{The string madam is Pallindrome}

^{using strcmpi() Function}

^{/*Compares the two strings*/}

^{#include<string.h>}

^{#include<stdio.h>}

#include<conio.h>

^main()

^{

^{char value 1[]="INDIA",value2[]="india";}

^{int ptr;}

^clrscr();

^ptr = strcmpi(value1, value2);

if(ptr>0)

{

printf("value 1 is greater than value 2\n");

}

if(ptr<0)

{

printf("value 1 is less than value 2\n");

}

if(ptr==0)

{

printf("value 1 equals value 2\n");

}

getch();

}

output:

value 1 equals value 2.

using strupr() & strlwr() Functions

/*Converts a given string into upper cases as well as lower case*/

 

#include<stdio.h>

#include<conio.h>

#include<string.h>

main()

{

char name[30];

clrscr();

printf("Enter your name:");

gets(name);

printf("The Uppercase string is:%s\n",strupr(name));

printf("the Lowercase string is:%s",strlwr(name));

getch();

}

output:

Enter your name: Ruthra

The Uppercase stromg is:RUTHRA

The Lowercase string is:ruthra

using strcat() & strstr() &strchr()Functions

/* To check acharacter which is persent in a given string and also concatenate the given two strings*/

#include<stdio.h>

#include<conio.h>

#include<string.h>

main()

{

char s1[30],s2[30];

clrscr();

printf("enter the string:");

gets(s1);

printf("Enter the sring:");

gets(s2);

strcat(s1,s2);

if(strchr("Hello",'e'))

{

printf("e is in hello\n");

}

else{

printf("e is not in hello\n");

}

if(strstr(hai everybody","hai"))

{

printf("found hai\n");

}

else

{

printf("Not found hai\n");

}

printf("the concatenated string is:%s\n",s1);

getch();

}

output:

enter the string:program

enter the another string:techie

e is in hello

found hai

the concatenated string is : programtechie