\b;Instruction \c;sizeof\n; The sizeof function lets you know the number of elements contained in an \l;array\u cbot\array;. That is the index of the last element plus one ("empty" elements are counted). \c; \s;{ \s; int a[12]; \s; a[5] = 345; \s; message( sizeof(a) ); // will display 6 \s;} \n; In this example we have 6 elements in the array after \c;a[5]=345\n;. The non initialized elements \c;[0]\n;, \c;[1]\n;, \c;[2]\n;, \c;[3]\n; and \c;[4]\n; will be counted. With multidimensionnal arrays you can get the size of a sub array: \c; \s;float xy[][]; // 2 dimensionnal array \s;xy[5][10] = 67; \s;message( sizeof(xy) ); // will display 6 \s;message( sizeof(xy[5]) ); // will display 11 \s; \n; \t;See also \l;Programming\u cbot;, \l;types\u cbot\type; and \l;categories\u cbot\category;.