strrev: Reversing the string using library function

String: strrev(string)

Reversing the string using library function

#include<stdio.h>          

#include<string.h>

main()

{

                char s[60];

                printf("\nEnter string:\t");

                gets(s);

                printf("\nReversed string is:  %s", strrev(s));

}

Output:

Enter string:   Hello How Are You

Reversed string is:  uoY erA woH olleH

strncpy: Copy specified number of characters from one string to another string using library function

String: strncpy(dest, source, n)

Copy specified number of characters from one string to another string using library function

#include<string.h>

main()

{

                char s[60], d[60]="\0";

                printf("\nSource string:\t");

                gets(s);

                strncpy(d, s, 5);

                printf("\nDestination string: %s", d);

}

Output:

Source string:  Hii How Are you

Destination string: Hii H

strcpy: Copy one string to another string using library function

String: strcpy(dest, source)

Copy one string to another string using library function

#include<stdio.h>

#include<string.h>

main()

{

                char s[60], d[60]="\0";

                printf("\nSource string:\t");

                gets(s);

                strcpy(d, s);

                printf("\nDestination string: %s", d);

}

Output:

Source string:  Hii How Are you

Destination string: Hii How Are you

strupr: Convert from Lower case to Upper case using Library function

String: strupr(string)

Convert from Lower case to Upper case using Library function

#include<stdio.h>

#include<string.h>

main()

{

                char s[60];

                printf("\nEnter string:\t");

                gets(s);

                printf("\nString in uppercase: %s", strupr(s));

}

Output:

Enter string:   Hello How Are You

String in uppercase: HELLO HOW ARE YOU

strlwr: Convert from Upper case to Lower case using Library function

String: strlwr(string)

Convert from Upper case to Lower case using Library function

#include<stdio.h>

#include<string.h>

main()

{

                char s[60];

                printf("\nEnter string:\t");

                gets(s);

                printf("\nString in lowercase: %s", strlwr(s));

}

Output:

Enter string:   Hello How Are You

String in lowercase:  hello  how are you

strlen: Length of the string using library function

String: strlen(string)

Length of the string using library function

#include<stdio.h>          

#include<string.h>

main()

{

                char s[60];

                printf("\nEnter string:\t");

                gets(s);

                printf("\nLength of string is: %d", strlen(s));

}

Output:

Enter string:   Hello How Are You

Length of string is: 17