3
votes
Accepted
trail of strange characters after printing character array
Uhhuh. I see that it is doing a nice job of encoding and storing the encoded characters in an array. But have you also stored the end of string marker '\0' at the end of the string?
printf will ...
- 68.1k
2
votes
Accepted
Pset1 How to print variable to make sure input is correct?
When you say return dollars, your program gives an output = "dollars" and ends itself.
The line of code after returning dollars is not even read. Just remove the return statement and try ...
- 381
2
votes
Accepted
I have written this code for vigenere and it is giving 02 errors
The problem is that argv is an array of strings, and you try to use it as a single string.
See this line:
if (!isalpha (argv[1][i]))
and this:
if (isupper (argv[j]))
Can you spot the difference?
- 7,366
2
votes
Accepted
Why the printf function is able to print 28 decimal digits, if the float has only 24-bits mantissa?
[I posted this on reddit last year but rather than just linking it, I thought I'd repost. In that case, they had printed a few more decimals, but the principle is the same.]
A float value has 32 ...
- 18.6k
2
votes
Accepted
How do I print the values of variables?
You can print the value of a variable by using placeholders. Each variable type has a different placeholder.
Ex:
To print out a string called x, write this:
printf("%s\n", x);
More info:
http://...
- 1,211
1
vote
printf printing an @ after a string
From man printf
s
If no l modifier is present: The const char * argument is expected to be a pointer to an array of character type (pointer to a string). Characters from the array are written up to (...
- 27.8k
1
vote
Accepted
Numbers with printf -- sanity check
It's not a floating point problem, it's an integer problem. ;-)
Look at this line:
int l = 65 / 14 * 100;
It contains all integers. Additionally, consider the precedence of operations - what ...
- 68.1k
1
vote
Accepted
what does %d or %i do?
It's all about context. In an assignment, like int I = j % 4;, the % is the modulo operator. However, in the case of a printf statement, it is not. Let's say that you had the statement printf("The ...
- 68.1k
1
vote
Accepted
Greedy not printing
It does print it, but as you haven't included any '\n' after it, it's printing at the beginning of your command line.
printf("%d\n", coins); //Output
That ought to fix it.
HTH
If this answers your ...
- 834
1
vote
Accepted
Tideman, my tests work but check50 says there is an error
Your old code was going through the first n pairs, where n is the number of candidates, then checking if one of the winners of those pairs is the total winner. You can't assume that with n candidates, ...
- 744
1
vote
Accepted
speller- tried using printf to debug -printf not working
This will (hopefully) explain this specific problem in main and perhaps the overriding problem. The output buffer is not "flushed" until a new line (or explicit flush). The answer provided here ...
- 27.8k
1
vote
Accepted
Help in linked datastructure
You seem to ignore the value of found. Just disables the duplicate check.
You don't have a loop for printing elements, and you seem to use ptr before initialisation. I would expect a loop very ...
- 20.9k
1
vote
Accepted
Why removing a printf function messes up with my code? CS50 pset1 cash greedy challenge
Could it be the missing line break? The output of
printf("Your input: $ %.2f", a);
printf(", which amounts to %i total.\n", cents);
or equivalently
printf("Your input: $ %.2f, which amounts to %i ...
- 20.9k
1
vote
Accepted
addition operation difference using printf in c
In the first case, you use a char variable, which in our case is an signed char by default, supporting values from -128 to 127. The result of your computation does not fit in, so it wraps around, ...
- 20.9k
1
vote
Accepted
Printing a character times a variable
Nope, can't do it that way.
If you want to print multiple copies of a char based on a var's value, think for loop.
If this answers your question, please click on the check mark to accept. Let's ...
- 68.1k
1
vote
Accepted
The question mark (????) example | Mario
The i is just a loop counter, and has nothing to do with the character printed.
In C, char is an 8-bit integer (well, not 8 bit per standard, but 8 bit in every existing and relevant system), by ...
- 20.9k
1
vote
Accepted
Pset2 Crack - Including printf causes passwords I am generating to change
The problem was hiding somewhere else:
// Create pword w/ max of 5 chars
char pword[6];
pword[5] = '\0';
That means that the first 4 chars are whatever random garbage is in them when the char array ...
- 68.1k
1
vote
Accepted
Puzzled by Pset3 - find less confortable- sorting output
Whenever an unexpected value, particularly 0, suddenly appears in the sorted list and the largest value disappears, look for code that goes beyond the end of the array.
This is a somewhat common ...
- 68.1k
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