What Is Reverse String In C

Program

reverse string





Input String : The site name is comp-psyche.com

Output String : moc.ehcysp-pmoc si eman etis ehT





There are various ways to reverse string in c. You can either use string function to reverse string in c or you can reverse string in c without using c string function.

In the following program we will reverse string in c using string function streev()





#include<stdio.h> #include<string.h> int main() { // Declaring variable str=string char str[50]; // Inputing string printf("Enter any string : "); gets(str); // Printing string and reversed string printf("String : %s

",str); printf("Reversed string : %s",strrev(str)); return 0; }

In the following program we will reverse string in c without using string function





int main() { // Declaring variable str=string, revstr[50]=reverse string char str[50], revstr[50]; // Declaring variable i=to iterate loop, l=length int i, j,l=0; // Inputing string printf("Enter any string : "); gets(str); // finding length while(str[l]!='\0') l++; // Reversing string j=0; for(i=l-1;i>=0;i--) { revstr[j]=str[i]; j++; } revstr[j]='\0'; // Printing string and reversed string printf("String : %s

",str); printf("Reversed string : %s",revstr); }

In the following program we will reverse string in c using recursion





// Write a c program to reverse a string using recursion #include<stdio.h> void reverse (int index, char *str ); int main (void) { char str[100]; printf ("Enter any string : "); gets(str); reverse (strlen(str) , str ); return 0; } void reverse (int index, char *str ) { if (--index < 0 ) { return ; } else { putchar ( *(str + index) ) ; reverse (index, str) ; } }

In the following program we will reverse string in c using pointer





// Write a C program to reverse a string using pointer #include<stdio.h> int main() { // Declaring variable str = string and revstr = to store the revere string char str[50]; char revstr[50]; char *strptr = str; // strptr - holds the first position address of str char *revptr = revstr; // revptr - holds the first position address of revstr int i=-1; // Inputting string printf("Enter any string : "); gets(str); // strptr is pointed to the last position address while(*strptr) { strptr++; i++; } // string stored in str is copied to revstr while(i>=0) { strptr--; *revptr = *strptr; revptr++; --i; } *revptr='\0'; printf("Reverse of string is : %s",revstr); return 0; }

seems to be a daunting task for the newbies but after reading this post you can easilyReverse string in c is basically taking input( i.e sentence ) from console and then display the sentence from last character to first character.The followingto reverse string in c accepts a string from the user and print the. For example consider the following input from the user :