// String test program. #include "String.h" String doubleCat(String a, String b) { a.put(b); return a + a; } String substr ( String x, int start, int length ) { return x(start, length); } main(int argc, char **argv) { String s = "Hello, "; cout << doubleCat ( s, "world.\n" ); while ( argc-- ) { String x(*argv++); for ( int i = 0; i <= length(x); i++ ) { cout << substr(x, 0, i) << "\t" << substr(x, i, length(x) - i) << "\t"; // split the expression to be kind to ccom cout << substr(x, 0, length(x) - i) << "\t" << x(length(x) - i, i) << "\n"; } cout << "\n"; } }