c++ - How to use printf with std::string - Stack Overflow
Here's a sampling of a few of the most obvious: As the question shows, printf isn't type-safe. If the type you pass differs from that given in the conversion specifier, printf will try to use whatever it …
Should I use printf in my C++ code? - Stack Overflow
Jan 7, 2010 · I generally use cout and cerr to write text to the console. However sometimes I find it easier to use the good old printf statement. I use it when I need to format the output. One …
What is the difference between printf () and puts () in C?
Mar 16, 2010 · The function printf () writes output to stdout, under the control of a format string that specifies how subsequent arguments are converted for output. I'll use this opportunity to …
How to correctly printf strings and characters with %s and %c
0 The thing is that the printf function needs a pointer as parameter. However a char is a variable that you have directly acces. A string is a pointer on the first char of the string, so you don't …
How to print a float with 2 decimal places in Java?
System.out.printf("%.2f", val); In short, the %.2f syntax tells Java to return your variable (val) with 2 decimal places (.2) in decimal representation of a floating-point number (f) from the start of …
Should I use %i or %d to print an integer in C using printf()?
On input, using scanf (), you can use use both %i and %d as well. %i means parse it as an integer in any base (octal, hexadecimal, or decimal, as indicated by a 0 or 0x prefix), while %d means …
'printf' vs. 'cout' in C++ - Stack Overflow
May 20, 2010 · You automatically get to use the zillions of lines of I/O code written by users you don't even know, and they don't need to know about your "extended stream" class. On the …
How to escape the % (percent) sign in C's printf - Stack Overflow
Dec 7, 2009 · 7 Nitpick: You don't really escape the % in the string that specifies the format for the printf() (and scanf()) family of functions. The %, in the printf() (and scanf()) family of functions, …
c - Left-pad printf with spaces - Stack Overflow
How can I pad a string with spaces on the left when using printf? For example, I want to print "Hello" with 40 spaces preceding it. Also, the string I want to print consists of multiple lines. D...
How can you print multiple variables inside a string using printf?
Put the '\n' at the end not the begining because it might not print anything unless another '\n' occurs or you explicitly call fflush(). Also, don't learn conio.h if you can and main() must return int.