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Where is the itoa function in Linux?
...nclude <stdio.h>
#include <stdlib.h>
int main ()
{
int i;
char buffer [33];
printf ("Enter a number: ");
scanf ("%d",&i);
itoa (i,buffer,10);
printf ("decimal: %s\n",buffer);
itoa (i,buffer,16);
printf ("hexadecimal: %s\n",buffer);
itoa (i,buffer,2);
printf ("bin...
How can I pad an int with leading zeros when using cout
...) << 25;
}
the output will be
00025
setfill is set to the space character (' ') by default. setw sets the width of the field to be printed, and that's it.
If you are interested in knowing how the to format output streams in general, I wrote an answer for another question, hope it is us...
string.Join on a List or other type
...le<T>)
If you can't upgrade, you can achieve the same effect using Select and ToArray.
return string.Join(",", a.Select(x => x.ToString()).ToArray());
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What is the easiest/best/most correct way to iterate through the characters of a string in Java?
StringTokenizer ? Convert the String to a char[] and iterate over that? Something else?
15 Answers
...
What function is to replace a substring from a string in C?
Given a ( char * ) string, I want to find all occurrences of a substring and replace them with an alternate string. I do not see any simple function that achieves this in <string.h> .
...
BestPractice - Transform first character of a string into lower case
I'd like to have a method that transforms the first character of a string into lower case.
11 Answers
...
Pointer expressions: *ptr++, *++ptr and ++*ptr
...ith your program, as it's the simplest to explain.
int main()
{
const char *p = "Hello";
while(*p++)
printf("%c",*p);
return 0;
}
The first statement:
const char* p = "Hello";
declares p as a pointer to char. When we say "pointer to a char", what does that mean? It means th...
Sort a single String in Java
...
toCharArray followed by Arrays.sort followed by a String constructor call:
import java.util.Arrays;
public class Test
{
public static void main(String[] args)
{
String original = "edcba";
char[] chars ...
Creating C formatted strings (not printing them)
...
Use sprintf.
int sprintf ( char * str, const char * format, ... );
Write formatted data to string Composes a string with the same text
that would be printed if format was used on printf, but instead of
being printed, the content is stored as a C stri...
How can I efficiently select a Standard Library container in C++11?
... },
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...