Questions tagged [boolean]
The boolean tag has no usage guidance.
12
questions
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1answer
15 views
Week 2: valid_triangle function example — compiling [errors]
This goes to week 2: Functions mini lecture. We create a custom function for verifying whether we have a valid triangle by assessing it's 3 sides.
I wanted to elaborate on the code. Since, this ...
0
votes
2answers
23 views
Else If Boolean Statements of Equality In the Case of Complex Numbers
In the lecture for Week 1, Professor Malan said that in an if statement, the third boolean expression (else if (x ==y)) is redundant or implied, since logically, if it is false that a number is ...
0
votes
1answer
19 views
What's in the bool function parenthesis?
hope everyone is staying safe. I just want to understand what's inside the parenthesis of the vote function in pset3 - Tideman:
bool vote(int rank, string name, int ranks[])
What does it mean to ...
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votes
0answers
11 views
Only show check box for Boolean Values
I'm doing an implementation of a CheckBox that inherits from QSyledItemDelegate, to put it into a QTableView.
The problem is that I am only trying to show the checkbox for Boolean Values, but it's ...
0
votes
1answer
44 views
Pset3 is_rest does not compile right?
I have some code I have written to test whether a blank line has been reached in the music file but I am not familiar with how to return a Boolean statement as true in C. When I run make I am getting ...
0
votes
1answer
112 views
What is the return value when isalpha() evaluates to true?
I was running into an issue with my program for Vigenere's Cipher and singled it out to a problem with the equivalence of the value that is returned from isalpha() and the boolean "true".
I now know ...
1
vote
2answers
98 views
Pset4 recover.c compiles, but can't seem to print Jpgs at all
Am starting a new thread as I'm having trouble understanding what is wrong with the code.. I've added printf statements at the jpgCheck function and did not get a print. I suspect it's the function?
...
2
votes
2answers
602 views
Pset4 recover, comparing hex in if statements
I'm trying to solve "recover" but, I'm unable to compare my if statements.
This is my error message:
error: comparison of constant 224 with expression of type 'char' is
always false
[-...
0
votes
1answer
88 views
pset2 caeser boolean returns
when running the code below with a command line ./caesartest 2, I get the false return 1, not the true, what is wrong? (I began having the trouble after including isdigit)...
#include <cs50.h>
#...
0
votes
1answer
123 views
A question about boolean expressions
I want to ask if there is a way to tell your programme to proceed with the code only when a boolean expression is false (not "true" as usual) and if the answer is yes, could you give me an example of ...
0
votes
1answer
1k views
PSET8 - MASHUP : Can't find FULLTEXT indexes when using WITH QUERY EXPANSION
I'm working on the final pset, more specifically on the search.php file.
I've figured out how to use query() and I'm actually taking advantage of print(json_encode($places, JSON_PRETTY_PRINT)); to ...
0
votes
1answer
67 views
code doesn'work, please help
I tried to write this little piece of code, but I couldn't figure it out entirely. Can someone help me with the missing parts?
#include <stdio.h>
#include <cs50.h>
int main(void)
{
...
