Reverse the String using Recursion
#include
#include
#include
void reverse(char [], int, int);
int main()
{
char str1[20];
int size;
clrscr();
printf("Enter a string to reverse: ");
scanf("%s", str1);
size = strlen(str1);
reverse(str1, 0, size - 1);
printf("The string after reversing is: %s\n", str1);
return 0;
}
void reverse(char str1[], int index, int size)
{
char temp;
temp = str1[index];
str1[index] = str1[size - index];
str1[size - index] = temp;
if (index == size / 2)
{
return;
}
reverse(str1, index + 1, size);
}
Output
Enter a string to reverse: malayalam
The string after reversing is: malayalam
Enter a string to reverse: cprogramming
The string after reversing is: gnimmargorpc
Copy One String to another using
Recursion
#include
#include
void copy(char [], char [], int);
int main()
{
char str1[20], str2[20];
clrscr();
printf("Enter string to copy: ");
scanf("%s", str1);
copy(str1, str2, 0);
printf("Copying success.\n");
printf("The first string is: %s\n", str1);
printf("The second string is: %s\n", str2);
return 0;
}
void copy(char str1[], char str2[], int index)
{
str2[index] = str1[index];
if (str1[index] == '\0')
return;
copy(str1, str2, index + 1);
}
Output
Enter string to copy: sanfoundry
Copying success.
The first string is: sanfoundry
The second string is: sanfoundry
Find the First Capital
Letter in a String using Recursion
#include
#include
#include
char caps_check(char *);
int main()
{
char string[20], letter;
printf("Enter a string to find its first capital letter: ");
scanf("%s", string);
letter = caps_check(string);
if (letter == 0)
{
printf("No capital letter is present in %s.\n", string);
}
else
{
printf("The first capital letter in %s is %c.\n", string, letter); }
return 0;
}
char caps_check(char *string)
{
static int i = 0;
if (i < strlen(string))
{
if (isupper(string[i]))
{
return string[i];
}
else
{
i = i + 1;
return caps_check(string);
}
}
else return 0;
}
output
Enter a string to find its first capital letter: iloveC
The first capital letter in iloveC is C.
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