I am new to C and I am trying to figure out what the printf method does. I have this little bit of code and I keep getting errors when I use the %x for example printf(“a) %x\n”, px); x% is for hex, Am i just using the wrong type here or is something else going on? what should the code I have below be printing out? int x = 10; int y = 2...
I need to do two (or more) passes over a va_list. I have a buffer of some size, and I want to write a formatted string with sprintf into it. If the formatted string doesn't fit in the allocated space I want to double the allocated space and repeat until it fits. (As a side-note, i would like be able to calculate the length of the format...
Hi Guys, I am a java beginner, please keep that in mind. I have to make a program that reads a number, and then displays that amount of exclamation mark "!". This is what i have: import java.util.Scanner; import java.io.PrintStream; class E_HerhaalKarakter1 { PrintStream out; E_HerhaalKarakter1 () { out = new PrintStream(System...
The problems: I can't use string.Format, I have C style format strings; I can't call the native printf (no P/Invoke); I can't use http://www.codeproject.com/KB/printing/PrintfImplementationinCS.aspx because of the license, I need something GPL-compatible. Is there a free implementation of printf/sprintf for the .net framework? Other ...
After all, both these statements do the same thing... int a = 10; int *b = &a; printf("%p\n",b); printf("%x\n",b); So, is there some good use of the %p option? ...
#include <stdio.h> int main() { float a = 1234.5f; printf("%d\n", a); return 0; } It displays a 0!! How is that possible? What is the reasoning? I have deliberately put a %d in the printf statement to study the behaviour of printf. ...
I'm a OCaml newbie. I'm playing around with "hello world" type snippets and came across this situation. Here's a session with the interpreter with some extra comments: # let average a b = (a +. b) /. 2.;; val average : float -> float -> float = <fun> # average 1. 4.;; - : float = 2.5 # string_of_float (average 1. 4.);; - : string = "...
Hi, I am stuck in a printf problem. I would appreciate if I can get some help here: In the below code, I can see the font family get displaced correctly in first printf(), but if I set it to variable, i only get an empty string. How can I put it in a variable and have the right values? I just don't want to type 'font.family().family().s...
double d; scanf("%f", &d); printf("%f", d); result: input: 10.3 output: 0.00000 Why? i think output should be 10.3 visual studio 2008. ...
Hi everybody. My question has no practical application. I'm just interested. Suppose, I have a double value and I want to obtain its string representation similarly to the printf function. How would I do that without the C runtime library? Let's suppose I'm on the x86 architecture. ...
If the float contains "5.12345", display only "5.1" If the float contains "5.0", display only 5 (drop the ".0") If the float contains "5.0176", display only 5 (drop the ".01") I thought printf() could do something like this... but now I can't seem to get it to work. ...
Hi All, I wrote this tiny code: #include <stdio.h> int main() { size_t temp; temp = 100; printf("lld=%lld, ld=%ld, u=%u\n", temp, temp, temp); return 0; } I am running this on a i386 GNU/Linux machine with gcc version 4.1.1 20070105 (Red Hat 4.1.1-52). This is the output that I got: lld=429496729700, ld=100, u=7993...
#include<stdio.h> int main() { printf("He %c llo",65); } Output: He A llo #include<stdio.h> int main() { printf("He %c llo",13); } Output: llo. It doesnt print He. I can understand that 65 is ascii value for A and hence A is printed in first case but why llo in second case. Thanks ...
How does printf handle its arguments? I know that in C# I can use params keyword to do something similar but I can't get it done in C ? ...
Hello, is there a way to get with printf colored output? #!/usr/bin/perl use warnings; use strict; use Term::ANSIColor; printf "%4.4s\n", colored( '0123456789', 'magenta' ); Output: (only newline) ...
Yesterday, I have been watching discussion here, about compilers and linkers. It was about C library function definitions. I have never thought of that, so it inspired me to do some searching, but I cannot find exactly what I want. I wonder, what is the smallest syntax you need to add into your source code to enable just printf() functio...
I have a function that processes some data and finds the threshold that classifies the data with the lowest error. It looks like this: void find_threshold(FeatureVal* fvals, sampledata* data, unsigned int num_samples, double* thresh, double* err, int* pol) { //code to calculate minThresh, minErr, minPol omitted printf("minThresh...
First up, I should let you know that I am learning C, so my apologies if this question seems stupid to a more advanced developer. I know you can print with printf() and puts(). I can also see that printf() allows you to embed variables inside and do some stuff like formatting. Is puts() merely a primitive version of printf(). Should it...
By default, printf() seems to align strings to the right. printf("%10s %20s %20s\n", "col1", "col2", "col3"); /* col1 col2 col3 */ I can also align text to the left like this: printf("%-10s %-20s %-20s", "col1", "col2", "col3"); Is there a quick way to center text? Or do I have to write a funct...
Hi there! Does anyone know a 100% clone of the C/C++ printf for Delphi? Yes, I know the System.Format function, but it handles things a little different. For example if you want to format 3 to "003" you need "%03d" in C, but "%.3d" in Delphi. I have an application written in Delphi which has to be able to format numbers using C format...