outputting an array

Code:

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void printoutput(const float prices[], const char taxable[], const int lines)       
{
        int i;


        puts("Price Taxable");
        puts("----- -------");


        for(i = 0; i<=lines; i++){
        printf("%2.2f%5c\n",prices[i],taxable[i]);
        }


}

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if lines is equal to 6, then its going to print out 7 elements (the last one being garbage value). I know I can do for(i = 0; i<=(lines-1); i++) but is there an alternative?

The typical pattern is:

Code:

---

for (i = 0; i < lines; i++)

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oh man, i feel so dumb, lol