Implement a function in C that takes a string "Hey" and converts it to "[H][e][y]" with no return value

Question

ToddL · Accepted Answer

#include 
#include 
#include 

void foo( char ** s)
{
  int i, j, xLen;
  char *x;

  xLen = 3 * strlen(*s);
  x = (char *) malloc(xLen*sizeof(char) + 1);
  memset(x, '\0', strlen(x)+1);

  for (i=0, j=0; i

More specific answer · Answer

This is what they were looking for:

#include 
#include 
#include 

void stringFunc(const char* str, char* out){
    int size = strlen(str);
    int new_size = 3*size;
    int i, j=0;
    
    for(i=0;i %s
", hey, out);
    return 0;
}

Pushkar · Answer

void func (char *s) {
    if (NULL == s)
         return;

    int len = strlen (s);
    int len2 = 3 *len;
    
    if (NULL = realloc (s, (len2+1) * sizeof(char)))
        return;

    s[len2] = '\0';
    while (len) {
        s[--len2] = ']';
        s[--len2] = s[--len];
        s[--len2] = '[';
    }
}

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