🚀 Programming Example
Strings and recursion
Strings and recursion
#include<stdio.h>
#include<string.h>
void display(char *str);
void Rdisplay(char *str);
int length(char *str);
main( )
{
char str[100];
printf("Enter a string : ");
gets(str);
display( str );
printf("\n");
Rdisplay(str);
printf("\n");
printf("%d\n",length(str));
}/*End of main()*/
void display(char *str )
{
if(*str == '\0')
return;
putchar(*str );
display(str+1);
}/*End of display()*/
void Rdisplay(char *str )
{
if(*str == '\0')
return;
Rdisplay(str+1);
putchar(*str );
}/*End of Rdisplay()*/
int length(char *str )
{
if(*str == '\0')
return 0;
return (1 + length(str+1));
}/*End of length()*/
Enter a string : atnyla
atnyla
alynta
6
Press any key to continue . . .
First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.
Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.