strtol

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Confusing language in specification of strtol, et al

The specification for strtol conceptually divides the input string into \"initial whitespace\", a \"subject sequence\", and a \"final string\", and defines the \"subject sequence\" as:[详细]

2023-03-20 05:50 分类：问答
C - Comparing numeric strings

Out of professional curiosity, what is the safest / fastest / most efficient way to compare two fully numeric strings in C?[详细]

2023-03-14 04:15 分类：问答
Segmentation Fault for numeric input

I\'m writing my first ever program in C and it\'s giving me a lot of problems. It\'s fairly simple; input a number and the output will be the corresponding term in the Fibonacci sequence where the fir[详细]

2023-03-09 22:12 分类：问答
reading an integer from a file

I have a code which suppose to read an int开发者_如何学运维eger from a file. But its actually reading as an character. Suggest me some modification where I can read the integers into an array.[详细]

2023-02-28 13:35 分类：问答
atol() v/s. strtol()

What is the difference between atol() & strtol()? According to their man pages, they seem to have the same effect as well as matching arguments:[详细]

2023-01-18 01:25 分类：问答
Do I need to cast the result of strtol to int?

The following code does not give a warning with g++ 4.1.1 and -Wall. int octalStrToInt(const std::string& s)[详细]

2022-12-22 10:51 分类：问答
Getting a hexadecimal number into a program via the command line

I can do this: int main(int argc, char** argv) { unsigned char cTest = 0xff; return 0; } But what\'s the right way to get a hexadecimal number into the program via the command line?[详细]

2022-12-18 06:54 分类：问答
Convert a string to int (But only if really is an int)

In college I was asked if our program detects if the string enter from command line arguments is a integer which it did not(./Program 3.7). Now I am wondering how I can detect this. So input as for ex[详细]

2022-12-15 15:45 分类：问答