How to read char as a number

This is really simply i know...

unsigned char var = 11;
...
fprintf(plik, "%c", var);

Then I want to read:

fscanf(plik, "%c", &var);

And the variable doesn't have开发者_开发百科 the proper value. I tried %d but I had an error.

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A char is always a 8-bit number. printf will interprete is as an ascii char or an integer based on the format.

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Not sure what you're asking. If you want to print the variable as the number 11 then simply:

printf("%d\n", var);

If you want to read it into an int then:

int a;
fscanf(plik, "%c", &a);
printf("%d\n", a);

If you are not reading the value correctly after writing it then maybe you want to fseek one position backwards.