#include static int printf_entry(void) { printf("printf test:%s-%d-%c %f 0x%x","2021" ,8 ,'1' ,3.14 ,0xff); return 0; } #include static void test_printf(void) { uassert_int_equal(printf_entry(), 0); } static void testcase(void) { UTEST_UNIT_RUN(test_printf); } UTEST_TC_EXPORT(testcase, "rtt_posix_testcase.stdio_h."__FILE__, RT_NULL, RT_NULL, 10);