I write two new lines in a file. The new lines are appended to this file. How can print these two new lines to the console. Could you please give me some examples about this? The process is below: fd = open(file , O_WRONLY | O_APPEND, 0666); ret = read(0, buf, 100); write(file, buf, strlen(buf)); The problem is 4th process.
Tag: printf
Extracting type info from printf format string
I’d like to extract c++ type information from a printf format string. For example, I’ve attempted this using parse_printf_format() from printf.h, but the returned argtypes don’t appear to include information about signed/unsigned. Is there some way to get signed/unsigned info as well? Answer As I said in my answer, the parse_printf_format is not made for what you need. You can
Linux bash printf format with color assign to variable
I just want a String (including coloring) be formatted by printf command and assign the result to a variable. Without assigning it to a variable it works fine, but as soon as I assign the result to a variable and write the result, the format is gone. My example: I found several solutions for passing the result to a variable
error: aggregate value used where an integer was expected
I am having following union and I have a function When i compile this code it is giving following error Answer You are failing to access a field of the indexed union array: mydata[0] is a value of type union data, and can’t be cast to uint64_t. You need to access the proper union member: to select the uint64_t value.
gotoxy() function using printf() ‘s position
Hello there i am working a project which need the gotoxy() function i have read gotoxy() implementation for Linux using printf i wonder why the need to change the x y order in printf, is that just to fit the coordinate system? in my way, i change it to printf(“%c[%d;%df”,0x1B,x,y) to meet my needs stil, during my using this gotoxy()