#include <stdio.h>
 
char *input_1 = "1111"; // al posto di argv[1];
 
int
radice (int x)
{
    int z = 0;
    int t = 0;
 
    while (1)
      {
        t = z * z;
 
        if (t > x)
          {
            //  È stato superato il valore massimo.
            z--;
            return z;
          }
 
        z++;
      }
 
    // Teoricamente, non dovrebbe mai arrivare qui.
}
 
int
main (int argc, char *argv[])
{
    int x;
    int z;
 
    sscanf (input_1, "%i", &x);
 
    z = radice (x);
 
    printf ("radq(%i) = %i\n", x, z);
 
    return 0;
}

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