C :: Save Output From Ansi Escape Sequence To Variable
Apr 13, 2013
I'm trying to get the current position of the cursor in the terminal window. I know that the ansi escape sequence " 33[6n" will display the current x and y location of the cursor. But what I can't figure out is how to store the x and y locations into their respective integer variables.
This is what I've done so far:
Code:
#include <stdio.h>
int main(void) {
int line, column;
char cursor_curr_pos[9];
char escape_sequence[] = " 33[6n"; //outputs x and y location of cursor e.g. ^[[18;1R
snprintf(cursor_curr_pos, 9, "%s", escape_sequence); //save output to string
sscanf(cursor_curr_pos, "^[[%d;%dR", &line, &column); //only read numbers from string
}
I'm doing some file input/output work here in C and received this warning during compilation (GCC). My research indicates that this error is in response to white space or a character cancellation function or something like that. I'm not 100% sure exactly what it means. My code works fine, but the following warning does appear.
Code: warning: unknown escape sequence: '40'
Here's my code (excluding a bunch of comments at the bottom of the file).
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The code who I use is:
class Program { public const short FILE_ATTRIBUTE_NORMAL = 0x80; public const short INVALID_HANDLE_VALUE = -1;
[Code]....
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Working in Win32 console app (VS 2010) I have been trying to convert several Unicode (UTF-16) C++ functions to Ansi C (UTF-8). The test app includes two tokenizer classes, each of which work perfectly well in their respective environments, CTokA and CTokW (UTF-8 and UTF-16).
A problem arises when I attempt to run the UTF-8 functions when the Character Set properties is set to 'Use Unicode Character Set' in that std::string manipulations do not perform as expected, e.g.,
printf("start ");
gets reproduced as
printf("start ");══════════ ²²²²
Attempting to null terminate the string where it is supposed to end simply results in a space in that position and the garbage end persists, e.g.,
printf("sta t ");══════════ ²²²²
Code: sline[11] = 0x0000;
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My question is this: Can UTF-8 and UTF-16 code coexist in a single Win32 console app?
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Code:
#include <stdio.h> int main(int argc, char **argv) { int i; printf("")
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It's a bit complicated to explain what an Ulam number is but Wolfram explains it very well here: [URL]
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What I want the program to do is tell me that the 49th Ulam number is 243.
/* C++ Program to find nth Ulam Number */ #include <stdio.h> #include <iostream> #include <vector> using namespace std; int main() { int num = 0; vector<int> v;
I made a program that prints out arithmetic sequence.. but problem is that,
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I am trying to write a program that checks whether the number is in sequence(as in if the numbers are in order it is a sequence). Ex: If the numbers are {1,2,3,6,7,8,9,10,11,13,15,17,20,21}, then, the underlined parts are a sequence. Now i want to find
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A sequence point in a C program is defined as "Any point in a program's execution at which it is gauranteed that all side effects of previous evaluations will have been performed and no side effects from subsequent evaluations have yet been performed."
