printf Archives - Page 2 of 3

Printing leading 0’s in C

I’m trying to find a good way to print leading 0, such as 01001 for a ZIP Code. While the number would be ...

May 9, 2022
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How to printf “unsigned long” in C?

I can never understand how to print unsigned long datatype in C. Suppose unsigned_foo is an unsigned long, then I try: printf("%lu\n", unsigned_foo) ...

May 7, 2022
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How do you format an unsigned long long int using printf?

#include <stdio.h> int main() { unsigned long long int num = 285212672; //FYI: fits in 29 bits int normalInt = 5; printf("My number ...

May 6, 2022
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‘printf’ vs. ‘cout’ in C++

What is the difference between printf() and cout in C++? 16 Answers 16 I’m surprised that everyone in this question claims that std::cout ...

May 5, 2022
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How can one print a size_t variable portably using the printf family?

I have a variable of type size_t, and I want to print it using printf(). What format specifier do I use to print ...

May 4, 2022
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Is there a printf converter to print in binary format?

I can print with printf as a hex or octal number. Is there a format tag to print as binary, or arbitrary base? ...

May 2, 2022
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Correct format specifier for double in printf

What is the correct format specifier for double in printf? Is it %f or is it %lf? I believe it’s %f, but I ...

May 1, 2022
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What is the argument for printf that formats a long?

The printf function takes an argument type, such as %d or %i for a signed int. However, I don’t see anything for a ...

May 1, 2022
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What is the printf format specifier for bool?

Since ANSI C99 there is _Bool or bool via stdbool.h. But is there also a printf format specifier for bool? I mean something ...

April 30, 2022
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Why does printf not flush after the call unless a newline is in the format string?

Why does printf not flush after the call unless a newline is in the format string? Is this POSIX behavior? How might I ...

April 29, 2022
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