stdio

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How to read an 2 dimensional array from file using C?

I tried: void read_grid_from_file( int** grid, const size_t row, const size_t column, FILE* inf ) { size_t x, y;[详细]

2023-01-29 00:33 分类：问答
How can fprintf block in Linux?

I have a fprintf call which blocked for about unreasonable 10 seconds when the system is IO busy but still has lots of CPU. I ne开发者_Python百科ither setvbuf of the underlying stream nor opened the u[详细]

2023-01-27 05:11 分类：问答
Check whether the process is being run as a pipe

I have a small Python utility which should be run only as a pipe. I want it to print out the help message when it runs stand alone. How can a process know whether it is being used as a p开发者_Python百[详细]

2023-01-26 10:39 分类：问答
Elegant binary i/o in C?

I\'ve been loading a lot of binary files recently using C/C++, and I\'m bothered by how inelegant it can be. Either I get a lot of code that looks like this (I\'ve since moved on):[详细]

2023-01-24 18:59 分类：问答
Find all substring's occurrences and locations

I\'m writing a program to parse some data sav开发者_JAVA技巧ed as text files. What I am trying to do is find the location of every needle in a haystack. I already can read the file in and determine th[详细]

2023-01-22 01:24 分类：问答
Tips on how to read last 'word' in a character array in C

Just looking to be pointed in the right direction: Have standard input to a C program, I\'ve taken each line in at a time and storing in a char[].[详细]

2023-01-21 23:03 分类：问答
Are System.out, stdout and cout the exact same thing?

Are System.out, stdout and cout the EXACT same thing in Java, C and C++ respectively? Why have three different names for the same thing (especially when C, C++ and Java have much in common)?[详细]

2023-01-19 03:02 分类：问答
Making fgets issue longer read() calls on linux

I\'m reading quite large lines(up to 128K) of text using fgets. I\'m seeing excessive context switching on the server, using strace I see the following:[详细]

2023-01-14 20:00 分类：问答
C - printf and scanf - How do I terminate input?

I am working on a simple application written in C. I am working in a Unix environment. My application is doing some simple I/O. I use printf to prompt the user for some input and then use scanf to ge[详细]

2023-01-14 14:29 分类：问答
Python and C++ integration. Python prints string as multiple lines

I\'m trying to write a program in python to run a program in C++.It wasn\'t working right, so I made the most basic version of each I could.[详细]

2023-01-12 04:12 分类：问答