Concatena Stringa K volte

Francesco Fiaschi

This code creates a string of characters and stores it in a memory buffer. The product() function reads the string from the buffer and prints it out.

Shortcut: create

#define _GNU_SOURCE 
#include <stdio.h> 
#include <stdlib.h> 
#include <string.h>  

char* product(char *str, int k) {
  char *sf;
  int size = strlen(str);
  sf = malloc(((size*k)+1)*sizeof(char));
  for(int i=0; i<k; i++){
    for(int j=0; j<size; j++) {
      sf[(i*size)+j] = str[j];
    }  
  }
  sf[size*k] = '\0';
  return sf;
}