On "print_number.c" file, add three test cass. They fail to run. My IDE is visual studio 2017.

static void print_number_should_print_positive_reals(void)
{
assert_print_number("0.123", 0.123);
assert_print_number("1e-09", 10e-10);
assert_print_number("1000000000000", 10e11);
assert_print_number("1.23e 129", 123e 127);
assert_print_number("1.23e-126", 123e-128);
assert_print_number("3.1415926535897931", 3.1415926535897931);

assert_print_number("1e-009", 1e-009);      // 测试出现错误，1e-009在assert_print_number函数中输入为1e-09
assert_print_number("1e 017", 1e 017);      // 测试出现错误，1e 017在assert_print_number函数中输入为1e 17
assert_print_number("1e-101", 1e-101);      // 错误，按照转换最后的new_buffer为1e-11，即"1e-101"会转换为"1e-11"

}

static void assert_print_number(const char expected, double input)
{
/ In MinGW or visual studio(before 2015),the exponten is represented using three digits,like:"1e-009","1e 017"
* remove extra "0" to output "1e-09" or "1e 17",which makes testcase PASS */

// have bug, sizeof(new_buffer) should be strlen(new_buffer)
for(i = 0;i <sizeof(new_buffer);i )
{
if(i >3 && new_buffer[i] =='0') // if input is 1e-101, new_buffer will be "1e-11", it's error
{
if((new_buffer[i-3] =='e' && new_buffer[i-2] == '-' && new_buffer[i] =='0') ||(new_buffer[i-2] =='e' && new_buffer[i-1] ==' '))
{
while(new_buffer[i] !='\0')
{
new_buffer[i] = new_buffer[i 1];
i ;
}
}
}
}
TEST_ASSERT_EQUAL_STRING_MESSAGE(expected, buffer.buffer, "Printed number is not as expected.");
}