int

问题 I think the maximum integer in python is available by calling sys.maxint . What is the maximum float or long in Python? 回答1: For float have a look at sys.float_info: >>> import sys >>> sys.float_info sys.floatinfo(max=1.7976931348623157e+308, max_exp=1024, max_10_exp=308, min=2.2 250738585072014e-308, min_exp=-1021, min_10_exp=-307, dig=15, mant_dig=53, epsil on=2.2204460492503131e-16, radix=2, rounds=1) Specifically, sys.float_info.max : >>> sys.float_info.max 1.7976931348623157e+308 If that

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I'm trying to write a small function that will get a number. The function should be idiot-proof so it would give warnings if ie. someone entered a character instead. I wrote a function like the one below, but if I enter a non-int the program gives me an infinite loop, constantly repeating the printf "Not a valid

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I'm trying to write a small function that will get a number. The function should be idiot-proof so it would give warnings if ie. someone entered a character instead. I wrote a function like the one below, but if I enter a non-int the program gives me an infinite loop, constantly repeating the printf "Not a valid

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I have the following Java class that adds a Person object to an existing Person Array : public class PersonService{ protected int lastItemInPersonArray = 0; private Person[] persons = new Person[100]; public void addPersonToPersonArray(Person personToAdd){ persons[lastItemInPersonArray++] = personToAdd; } } I

问题 Why do I get negative values when I'm trying to convert chars from the string read from file to int? fin.getline(text, 512); fin.close(); someInt = (int)text[0]; // It happens to be the random value and always negative. WHOLE CODE: The problem itself is in the Decrypt function. When I read the string from file, and convert chars from that string to int, i get negative values, always random, even if characters are the same. // WUEncryptor.cpp : Defines the entry point for the console

问题 I have the following code in C++ and I would like to convert a integer to a const char* in order to write on a file. I tried itoa or sstream functions but it's not working. FILE * pFile; pFile = fopen ("myfile.txt","w"); int a = 5; fputs (&a,pFile); fclose (pFile); Thanks in advance 回答1: The first parameter to fputs is a char* , so the code you show is obviously incorrect. You say I tried itoa or sstream functions but it's not working. but those are the solutions, and there's no reason for

问题 How would I go to cast/convert literal char '0' to int 0 ? i.e.: char string[] = "0101"; char ch = string[0]; x = magic(ch); if (x) printf("int zero") 回答1: ch = 0; Now, if you want to convert any digit-character to its numeric equivalent, you'd need something like: ch = ch - '0'; 来源： https://stackoverflow.com/questions/41365518/c-cast-literal-char-0-to-int-0-zero-how

问题 How would I go to cast/convert literal char '0' to int 0 ? i.e.: char string[] = "0101"; char ch = string[0]; x = magic(ch); if (x) printf("int zero") 回答1: ch = 0; Now, if you want to convert any digit-character to its numeric equivalent, you'd need something like: ch = ch - '0'; 来源： https://stackoverflow.com/questions/41365518/c-cast-literal-char-0-to-int-0-zero-how

问题 I need to concatenate an integer to a system call string: status = system("./run test.txt " + integer); integer here can be any int. What is the best way of doing this? 回答1: Use snprintf (or sprintf if you don't have snprintf or need your code to run on systems without it) to print to a char buffer, and pass that to the system call. e.g. #define MAX_LEN 128 char buffer[MAX_LEN]; int val = 0; snprintf(buffer, MAX_LEN, "./run test.txt %d", val); // you would be wise to check that snprintf has

问题 This question already has an answer here : Convert binary two's complement data into integer in objective-c (1 answer) Closed 5 years ago . I apologize beforehand if this is a beginner's question; I'm new to C programming. I am working on an embedded design project that requires my ATmega128 reads in a 4-byte data from a sensor. The data contains two 14-bit measurements that I need to process. There is one part I'm not completely sure about because I haven't done a lot of C programming yet.