What is the problem in my code ?

Question

It's giving no output.
https://code.sololearn.com/c0QXh4X3WgpJ/?ref=app

Answer 1

Check for three characters it is giving correct result but for 4 variables it gets changed

Answer 2

Solved :--

#include <stdio.h>

int main() {
void reverse(char *); // prototype declaration locally.
char str[100];
printf ("Enter the string: ");
scanf("%s",&str);
reverse(str);
printf("The reverse string is %s",str);
return 0;
}

void reverse(char *str)
{
int i,j;
char *s,*beg,*end;
for(i=0; *(str+i)!='\0'; i++); // i counts the length of the string str.
beg=str; //initially start of string
end=str;
//pointer moved to last character
for(j=i-1;j>0;j--)
end++;

//swaping and updating value
for (j=i-1; j>0; j--)
{
s=*end;
*end=*beg;
*beg=s;
beg++; end--;
}
}

Answer 3

#include <stdio.h>

int main() {
char *reverse(char *); // prototype declaration locally.
char str[100];
printf ("Enter the string: ");
scanf("%s",&str);
reverse(str);
printf("The reverse string is %s",str);
return 0;
}

char *reverse(char *str)
{
int i,j;
char *s,*beg,*end;
for(i=0; *(str+i)!='\0'; i++); // i counts the length of the string str.
beg=str; //initially start of string
end=str;
//pointer moved to last character
for(j=i-1;j>0;j--)
end++;

//swaping and updating value
for (j=i-1; j>0; j--)
{
s=*end;
*end=*beg;
*beg=s;
beg++; end--;
}
return (&s);
}

Answer 4

Check again, this is what you wanted.

Answer 5

The problem is almost solved.

I'll post the final answer soon.

Answer 6

I think some logical errors I will solve it