How do you print a limited number of characters?
27,361
Solution 1
You have your parameters in the wrong order. The should be written:
printf("%.5s", data);
printf("%.*s", numRead, data);
The first parameter to printf
is the format specifier followed by all the arguments (which depend on your specifier).
Solution 2
I think you are switching the order of arguments to printf
:
printf("%.5s", data); // formatting string is the first parameter
Solution 3
You're not calling printf() correctly.
int printf ( const char * format, ... );
Which means...
printf("%.5s", data);
Author by
Mike Pateras
Young developer, interested in gaming and game development, along with many other things.
Updated on January 22, 2020Comments
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Mike Pateras over 4 years
Sorry to put a post up about something so simple, but I don't see what I'm doing wrong here.
char data[1024]; DWORD numRead; ReadFile(handle, data, 1024, &numRead, NULL); if (numRead > 0) printf(data, "%.5s");
My intention with the above is to read data from a file, and then only print out 5 characters. However, it prints out all 1024 characters, which is contrary to what I'm reading here. The goal, of course, is to do something like:
printf(data, "%.*s", numRead);
What am I doing wrong here?