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How to know how many argument vsnprintf has used, if buffer size is less than actual size needed?

Unveiling the Mystery How Many Arguments Did vsnprintf Actually Use Lets say you re working on a program that requires you to format a string with potentially v

2 min read 05-10-2024 29
How to know how many argument vsnprintf has used, if buffer size is less than actual size needed?
How to know how many argument vsnprintf has used, if buffer size is less than actual size needed?

Strange printf not working after a getchar and getchar skipping

The Curious Case of printf Not Working After getchar and getchar Skipping Input Have you ever encountered a situation where your printf function seemed to stop

2 min read 03-10-2024 34
Strange printf not working after a getchar and getchar skipping
Strange printf not working after a getchar and getchar skipping

STM32, arm-none-eabi: String is not output with printf if the string contains a leading `\n`

STM 32 printf Mystery Why Does a Leading n Silence My String The Problem You re developing on your STM 32 microcontroller and using printf to output strings Eve

2 min read 03-10-2024 39
STM32, arm-none-eabi: String is not output with printf if the string contains a leading `\n`
STM32, arm-none-eabi: String is not output with printf if the string contains a leading `\n`

Problems with printf formating when porting PlatformIO from Windows to Mac

Platform IO printf Formatting Issues Windows to Mac Migration Migrating your Platform IO project from Windows to mac OS can sometimes lead to unexpected behavio

2 min read 03-10-2024 39
Problems with printf formating when porting PlatformIO from Windows to Mac
Problems with printf formating when porting PlatformIO from Windows to Mac

C program does not write data to the file properly

Why Your C Program Isnt Writing to a File Common Mistakes and Solutions Have you ever spent hours staring at a C program frustrated that it wont write data to a

2 min read 02-10-2024 35
C program does not write data to the file properly
C program does not write data to the file properly

Positional arguments in Go Printf?

Understanding Positional Arguments in Gos Printf Function Gos Printf function provides a powerful and flexible way to format output but it can be confusing for

2 min read 02-10-2024 37
Positional arguments in Go Printf?
Positional arguments in Go Printf?

Printing negative value as long with %ld in printf(3) results in an unsigned output, except with explicit type cast... Why?

Why Printing Negative Values with ld in printf Results in Unsigned Output The printf function in C uses format specifiers to control how data is printed When de

2 min read 01-10-2024 35
Printing negative value as long with %ld in printf(3) results in an unsigned output, except with explicit type cast... Why?
Printing negative value as long with %ld in printf(3) results in an unsigned output, except with explicit type cast... Why?

Bash Command Substitution in echo/printf doesn't print result on the same line?

Understanding Bash Command Substitution in echo and printf You re trying to use command substitution within echo or printf to print the output of a command but

2 min read 29-09-2024 41
Bash Command Substitution in echo/printf doesn't print result on the same line?
Bash Command Substitution in echo/printf doesn't print result on the same line?