I am a little confused here. I would like to do something like this: create some kind of buffer I can write into clear the buffer use a printf()-like function several times to append a bunch of stuff into the buffer based on some complicated calculations I only want to do once use the contents of the buffer and print it to several Pri...
I've just encountered a weird problem, I'm trying to printf an integer variable, but I forgot to specify the variable name, i.e. printf("%d"); instead of printf("%d", integerName); Surprisingly the program compiles, there is output and it is not random. In fact, it happens to be the very integer I wanted to print in the first place, ...
As of now I'm using below line to print with out dot's fprintf( stdout, "%-40s[%d]", tag, data); I'm expecting the output would be something like following, Number of cards..................................[500] Fixed prize amount [in whole dollars]............[10] Is this a high winner prize?.....................[yes] How to prin...
If for example I should not use standard library functions like printf, putchar then how can I print a character to the screen easily. Is there any easy way of doing it. I dont know much about system calls and if I have to use them then how? So can any one advice an easy way of printing a character without using library functions?? Than...
i have a function like void printMe (void *i) { printf("%d", i); } where i want to pass a void pointer and print it to screen. The above example is fine if the i is integer, float or double but crashes if i is a char. There is no overloading in C like i usually use in C++. So the question is this, can we create a function in C tha...
The question is in the title. I'd like to do in Python what I do in this example in C: #include <stdio.h> int main() { int i; for (i=0; i<10; i++) printf("."); return 0; } Output: .......... In Python: >>> for i in xrange(0,10): print '.' . . . . . . . . . . >>> for i in xrange(0,10): print '.', . . . . . . . . . . ...
Hi I am playing with the printf and the idea to write a my_printf(...) that calls the normal printf and a sprintf that sends the result to a special function. (I was thinking about sprintf since that behaves just like printf on most platforms). My idea was to write a small macro that did this: #define my_printf(X, Y...) do{ printf...
I've coded a program in C that sends messages to the stdout using printf and I'm having trouble redirecting the output to a file (running from bash). I've tried: ./program argument >> program.out ./program argument > program.out ./program >> program.out argument ./program > program.out argument In each case, the file program.out is...
Hey all. I want to use print to print hex numbers in the form 0x###, but if the number is 0, I want to omit the 0x part. How can I do this? Thanks! ...
I am debugging some Linux C code in a signal handler for floating point exceptions. The goal is to check the floating point registers, print some information, and then abort. I get a segmentation fault when attempting to printf the result of (char)('0' + phyreg). struct ucontext * uc = (struct ucontext *) data; fpregset_t fp = uc ...
I'm looking for an elegant way to denote undefined values in situations where formatted numbers usually render. I'll work up a small example. For starters, you of course can't use this: #!/usr/bin/perl use strict; use warnings; for my $s (1, 1.2, undef, 1.3) { printf "%5.2f\n", $s; } ...because the 'use warnings' nails you with 'U...
I haven't had the chance to take any serious low-level programming courses in school. (I know I really should get going on learning the "behind-the-scenes" to be a better programmer.) I appreciate the conveniences of Java, including the ability to stick anything into a System.out.print statement. However, is there any reason why you woul...
For clarification purposes I need the program to print the numbers that are input for a and b, not the actual letters a and b. Okay here's the revised program per yall's suggestions: int main (int argc, char *argv[]) { int a; /*first number input*/ int b; /*second number input*/ a = atoi(argv[1]); /*assign to a*/ ...
There was a bit of a surprise with some code today. I was compiling it on AIX, with the warning level set to anal to see what rogue issues might be lurking. Something new crawled out of the code. 1540-2837 (W) '0' flag is disregarded when combined with precision and 'i' printf format. After looking at the offending...
This question is similar to "dropping trailing ‘.0’ from floats", but for Perl and with a maximum number of digits after the decimal. I'm looking for a way to convert numbers to string format, dropping any redundant '0', including not just right after the decimal. And still with a maximum number of digital, e.g. 3 The input data is fl...
Ok the output is supposed to look like this: ./a 3 4 8 2 3 4 8 2 This is what I have so far, but I am lost and can only get the first integer to print (we have to use GetInt, which gets the specified integer in the string): int main (int argc, char*argv []){ int v; int i; i = 1; v = GetInt(argc, argv...
On WinCE, when using printf, what are the qualifiers for various data types - short, unsigned long etc. For short and ulong, I know the answers are %hd & %lu, I am actually looking for a MSDN site that lists all data types and their qualifiers on CE. Unfortunately I cannot find the site now. I have already looked at this post, but it d...
I don't get why I get 0 when I use printf and %d to get the size of my vector: vector<long long> sieve; int size; ... //add stuff to vector ... size = sieve.size(); printf("printf sieve size: %d \n", size); //prints "printf sieve size: 0" std::cout << "cout sieve size: "; std::cout << size; std::cout << " \n "; //prints "cout sieve size...
I'm looking for a good Javascript equivalent of the C/PHP printf() or for C#/Java programmers, String.Format() (IFormatProvider for .NET). My basic requirement is thousand seperator format for numbers for now, but something that handles lots of combinations (including dates) would be good. I realise Microsoft's AJAX library provides a ...
We have a Coverity bug for this line of code: snprintf( tempStr, size, testStrings[testID], A2DtoV(testResults[testID].value), A2DtoV(testResults[testID].min),A2DtoV(testResults[testID].max)); The error says: non_const_printf_format_string: "format string is not a string literal, potential security vulnerability if user controlled" ...