Questions tagged [specifier]
59 questions
2
votes
3 answers
C printf function specifier
I need to print out a float value with 16 significant digits.
Right now when I print, it prints out
i.e 2.555556
when I want it to print out: 2.555555555555556 /// A total of 16 digits
My printf specifier currently is : "%20.18lf"
ideas?
user1050632
- 680
- 4
- 13
- 26
2
votes
2 answers
C language: How to access individual format specifiers in a printf format string?
I have a format string say char *format = "hello %d world %d" and an array int array[2] = {10, 20}; with me. This is just for example sake, the number of values to be printed in the array can be arbitrary, a max-sized array with a count of the…
Gopa
- 33
- 4
2
votes
1 answer
printf "%n" specifier not working properly
I copied this code from geeks for geeks.
#include
int main()
{
int c;
printf("geeks for %ngeeks ", &c);
printf("%d", c);
getchar();
return 0;
}
It should print the characters from start to %n followed by the number of printed…
AhmetEnesKCC
- 69
- 2
- 8
2
votes
1 answer
C float or double in printf format specifier and pow function
#include
#include
int main(void){
printf("%lf\n", pow(1.0, 2.0));
printf("%f\n", pow(1.0, 2.0));
return 0;
}
First printf() gives output 0.000000 but second printf() gives output 1.000000. Why?
Using Codeblocks on…
AlexQualcosa
- 467
- 6
- 11
2
votes
1 answer
Using format specifiers on Linux system call write()
I am trying to write to stdout using only Linux system calls described in section 2 of the manual (http://man7.org/linux/man-pages/dir_section_2.html).
ssize_t write(int fd, const void *buf, size_t count);
is the function I am trying to use,…
adhdj
- 352
- 4
- 17
2
votes
3 answers
Treating 0 as a significant figure in printf %g format specifier
I'm trying to print floating point numbers 1.2345678, 0.1234567, 123.45678 using printf in such a way that only the first n characters are printed. I want these number to line up. The %g format specifier in printf("%*g", n, var) does this but the…
user3091673
2
votes
1 answer
Multiplying numbers in C
I have written the following code to multiply two numbers and I see the result to be incorrect. I assume the data type is not holding the value right. But the answer its printing is incorrect.
#include
main()
{
long int val1,val2;
…
Koneri
- 297
- 3
- 10
- 27
2
votes
2 answers
string specifier ( %d , %f etc...)
#include
#define Type int
int main()
{
Type x=3;
printf("%d",x);
return 0;
}
The code is simple and works fine. My question is, if I change #define Type int to #define Type float so , I have to change %d to %f…
Mhacom Kone
- 41
- 5
2
votes
1 answer
What is the correct string specifier for _cmd?
I use %s for _cmd, the latest XCode will generate an error "Format specifies type char * but the argument has type SEL". Checked documentation and couldn't find a clue. Anyone know the correct string specifier to use?
lichen19853
- 1,410
- 2
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- 21
1
vote
1 answer
VUE/VITE Problem: Uncaught TypeError: Failed to resolve module specifier "vue". Relative references must start with either "/", "./", or "../"
I passed last few days on searching the answer to my problem but nothing helps. I deployed my SPA made in Vite/Vue on GH Pages. Locally all works fine, on the deployed page there is an error:
Uncaught TypeError: Failed to resolve module specifier…
Paula Danthu
- 9
- 1
1
vote
0 answers
Uncaught (in promise) Error: Unable to resolve bare specifier '@microsoft/signalr'
I want to use signalR in RazorPages web
In typescript file:
import * as signalR from "@microsoft/signalr";
Create a connection to hub.
const connection = new signalR.HubConnectionBuilder()
.withUrl("/hub")
…
Thang07
- 11
- 2
1
vote
3 answers
two or more data types in declaration specifiers
I've looked around and tried a few things, nothings working at the moment.
main.c:13: error: two or more data types in declaration specifiers
make[1]: *** [main.o] Error 1
make: *** [build] Error 2
My code is pretty much this(i've commented…
Sman
- 11
- 1
- 2
1
vote
1 answer
Expected specifier-qualifier-list before error
#import
#import "NotepadViewController.h"
#import "NotesTableViewController.h"
#import "NoteInformationTransferProtocol.h"
@interface NotesViewController : UIViewController
{
UITextField…
user810606
1
vote
2 answers
C preprocessor define to replace string format specifier
I am wondering if it's possible to use a C pre-processing define to change a string format specifier. I've tried writing the following, but seem to get a compiler error. It's simply trying to replace the existing format specifiers with the correct…
Gregory Bolet
- 13
- 6
1
vote
1 answer
Don't ignore whitespaces when using wscanf for UTF-8
I am trying to read wide charaters into an array of wchar_t from stdin. However, the negated scanset specifier ([^characters]) for ls does not work preperly as expected.
The goal is that I want every whitespace read into str instead of being…
Kevin Dong
- 5,001
- 9
- 29
- 62