String zu aufteilen und variabeln dras machen

#include <stdio.h>
...
#define A_MAX 20
float a[A_MAX];
int i = 0;
char* string = "123,13 12"
float f;
while (i < A_MAX && sscanf(string, "%f", &f) == 1) {
  a[i++] = f;
}

NAME
       strtok, strtok_r - extract tokens from strings

SYNOPSIS
       #include <string.h>

       char *strtok(char *s, const char *delim);

       char *strtok_r(char *s, const char *delim, char **ptrptr);

DESCRIPTION
       A  `token'  is  a  nonempty  string  of characters not occurring in the
       string delim, followed by \0 or by a character occurring in delim.

       The strtok() function can be used to parse the string  s  into  tokens.
       The  first call to strtok() should have s as its first argument. Subse-
       quent calls should have the first  argument  set  to  NULL.  Each  call
       returns  a  pointer  to the next token, or NULL when no more tokens are
       found.

       If a token ends with a delimiter, this delimiting  character  is  over-
       written  with a \0 and a pointer to the next character is saved for the
       next call to strtok().  The delimiter string delim may be different for
       each call.

#include <iostream>
#include <fstream>

using namespace std;


ifstream infile ("datei.txt");
float f;
const int max = 20;
float a[max];
int i = 0;

infile.imbue (locale ("de_DE"));
while (i < max && infile >> f) {
  a[i++] = f;
}

while (!infile.eof()) { ... }