//Number of output fixed points: 3.14 tb_printf("%{fixed}\n", tb_float_to_fixed(3.14)); //Output ipv4 address: 127.0.0.1 tb_ipv4_t addr; tb_ipv4_set(&addr, "127.0.0.1"); tb_printf("%{ipv4}\n", &addr);
typedef struct _rect_t { tb_long_t x; tb_long_t y; tb_size_t w; tb_size_t h; }rect_t; tb_printf("%{rect}\n", &rect);
//The description function of the rect object, which formats the description content into the cstr and returns the actual string size static tb_long_t tb_printf_rect_func(tb_cpointer_t object, tb_char_t* cstr, tb_size_t maxn) { // check tb_assert_and_check_return_val(object && cstr && maxn, -1); // the rect rect_t* rect = (rect_t*)object; // format tb_long_t size = tb_snprintf(cstr, maxn - 1, "(x: %ld, y: %ld, w: %lu, h: %lu)", rect->x, rect->y, rect->w, rect->h); if (size >= 0) cstr[size] = '\0'; // ok? return size; } //Register the printf parameterized printing support of the% {rect} object. Note: It is better to register at the program initialization stage tb_printf_object_register("rect", tb_printf_rect_func); //Print the rect object information and display: "(x: 10, y: 10, w: 640, h: 480)" rect_t rect = {10, 10, 640, 480}; tb_printf("%{rect}\n", &rect);
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tb_printf -
tb_snprintf -
tb_vsnprintf -
tb_wprintf -
tb_swprintf -
tb_vswprintf -
tb_trace_i -
tb_trace_d -
tb_trace_e -
tb_trace_w
