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I want to add two blank space inside c programming print statement. I have try but it always count one single space. How can i add another one ?? If i use \t then it count 4 space as set.
printf("Hello Dhaka!");
printf("Hello Dhaka!"); adds 2 spaces, since it contains 2 spaces.
The problem must be related to your output. Perhaps the console uses some strange font that is not fixed-width.
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total+=!used[str[i]-'a'];
used[str[i]-'a']=1;
It is the condition for checking the characters and saving the value in the variable total.
The total variable will contain the number of unique characters in the array str.
This happens because you increment the count(total+=!used[str[i]-'a']) only if you haven't already marked the character as visited. If you incremented it, you mark it as such in the next line (used[str[i]-'a']=1) so that you wont count it again.
The notation str[i]-'a' is used to shift the ascii values of the characters from 0 to 25 (instead of 97 to 122) so that you can spare some space in the array.
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So I have these two variables, a and c, they both have a space after them so when I'm trying to join them it prints "a c " and not "ac". How should I go on about removing the spaces?
set "a=%a: =%"
is one way. set the variable=%variablename:stringtoreplace=replacementstring%
The quotes ensure that any trailing spaces in the set line are not included into the value assigned.
The replacement string may be empty.
This is a general solution, replacing all strings matching stringtoreplace with the defined replacement.
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Need to read everything until say *** comes up:
Input:
Hey there
how are
you
***
Output:
Hey there
how are
you
Would have used scanf("%[^***]s) but can't read all lines at once.
Only having basic C knowledge
The way I would do this is read one line at a time (with a funcion such as fgets instead of scanf) and then see if the line that you last read is equal to ***. You can use use strcmp to do that but you can also do it by hand if you are not allowed to use strcmp for some reason.
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I just found a short code here, which would detect blank lines in a file. It used fgets() function in C library.
I wonder if character functions are better suited for files which have tabs, and perhaps continous spaces.
My qustion is what is the best way to parse a file for blank lines?
You can also use scanf(" %[^\n]s",string); in order to read spaces but fgets is best solution for your case.
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In C, is it possible to force an unsigned char to print as a hex, not with %x, but in the little square box that displays the four hex numbers, but only takes up one character, for example 轩?
No, it is not possible.
This is not related to C, but to the font your terminal uses. C outputs characters as bytes; your terminal is responsible for choosing how to display them as pixels. (You might as well ask how to make the text italic.)