C program to input a string from the user. Use appropriate built-in string functions to find the length of the string, copy 1 string to another, convert to uppercase, convert to lowercase, string comparison, string comparison irrespective of case, comparison of n characters in 2 strings, string concatenation, concatenation of ‘n’ of characters, reverse a string

c program to input a string from the user. Use appropriate built-in

string functions to find the length of the string, copy 1 string to another,

convert to uppercase, convert to lowercase, string comparison, string

comparison irrespective of case, comparison of n characters in 2 strings, string

concatenation, concatenation of ‘n’ of characters, reverse a string.*/

 

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

            int l,comp,cmp;

            char str[10], s1[10], s2[10], cat[20];

            clrscr();

            printf("Enter 1st String : ");

            gets(str);

            l=strlen(str);

            printf("\nThe length of the String : %d",l);

            strupr(str);

            printf("\nIn UPPERCASE : %s",str);

            strlwr(str);

            printf("\nIn lowercase : %s",str);

            strrev(str);

            printf("\nIn Reverse : %s",str);

            printf("\n\nEnter two strings : ");

            scanf("%s %s",&s1,&s2);

            cmp=strcmp(s1,s2);

            if(cmp==0)

            printf("\nStrings are equal");

                        else

            printf("\nStrings are not equal");

            strcat(s1,s2);

            printf("\n\nString Concatenation : %s",s1);

            strcpy(s1,s2);

            printf("\nString2 copied into String1 : %s",s1);

            getch();

 

}

 

/*Output

Enter 1st String : yahoo

 

The length of the String : 5

In UPPERCASE : YAHOO

In lowercase : yahoo

In Reverse : oohay

 

Enter two strings : yahoo

yahoo

 

Strings are equal

 

String Concatenation : yahooyahoo

String2 copied into String1 : yahoo

 

*/