3
votes
PSET1 - Water fails check50: "expected prompt for input, not exit code of 0"
One option would be to simply use the GetInt(); function in the cs50.h library since it already reprompts the user for input if they give bogus values.
Or implement the feature yourself and use a ...
- 431
2
votes
Accepted
water week 1 problem
Like I edited in my own problem and comment, I solved it.
#include <stdio.h>
#include <cs50.h>
int main(void)
{
int bottle = 12;
int num_bottles;
printf("minutes: \n");
int ...
- 131
2
votes
Accepted
Infinite looping in hacker 1 - water
I like that you don't want to use CS50's tools and use tools that you are going to have available everywhere outside of CS50.
I was reviewing your code. I tried to solve it with a fflush(stdin) line, ...
2
votes
Infinite looping in hacker 1 - water
Yes, don't use scanf. You have a library that helps you avoid using scanf.
The reason is probably related to the fact that scanf still keeps the string you input in its buffer and it won't empty it, ...
- 1,687
1
vote
water week 1 problem
Not really a good solution. What happens if someone enters bad input twice? You need a solution that will keep prompting for valid input until it is entered. Time to discover what a while loop is.
...
- 68.4k
1
vote
Accepted
Pset1 Water Issue, reprompting with "Retry: " for Non-integers, and "Minutes: " for negative integers
what you are seeing is a side effect of how get_int works. If you have something like:
int num;
do
{
printf("Number: ");
num = get_int();
}
while (num < 0);
And run it, you will see this ...
- 18.6k
1
vote
unused variable error
You should review the class material and google references for printf. Specifically, to print the value of a variable, you need a place marker in the print format string and the var name in the printf ...
- 68.4k
1
vote
Accepted
PSet 1, Trying to add a loop to Water
You'd need a loop only if you want to re-query the user. If minutes does not change within the loop, the result will always be the same.
Also, while (minutes < 0, minutes == 0); is an empty loop, ...
- 20.9k
1
vote
Accepted
What is the proper way to use "do while" loop for Pset1 water
The do while loop tells the program to do these things in order:
Do something - The code you put between the curly braces {statement(s)} will run at least once.
The while condition between the ...
- 297
1
vote
Accepted
Do-while loop in pset1 returning negatives
Your code is actually doing what you told it to, but you told it to print out the number of bottles before it exited the for-loop. A simple fix is to put the printf outside the for-loop.
If you still ...
- 800
1
vote
Can't get the do-while loop to work in pset1
You lack the main function, all console programs must have a main function:
int main(void)
{
some code
}
The error is surely because the compiler thinks that you are going to define or declare a ...
- 5,169
1
vote
Accepted
(PSET 1) Creating functions for water.c. Dont understand how this function worked. (Contains pset answer)
A real answer is further down
Take note to how I formatted your code according to CS50's style guide. Well formatted code is important if you expect others (or even yourself at a later date) to read ...
- 1,223
1
vote
Accepted
Can't figure out this problem with water.c = error: expected identifier or '('
Try taking away the semicolon after int main (void). From there you will have to go through and fix your other errors, but those should be easier to fix. Just run make and then go through each error ...
- 105
1
vote
pset 1 water fails check50 "rejects "foo" minutes"
in 2017 the GetInt() function is depreciated
water.c:8:9: warning: 'GetInt' is deprecated [-Wdeprecated-declarations]
now use
get_int();
It works for:-
Positive Integer
Negative Integer
Zero
...
- 11
1
vote
My water.c program won't compile - Pset1
%f
is a format specifier wrong for an integer, the right thing would be %i, or %d. Since NumberOfBottles is an integer, the variable is unused, hence the second error, but in this case will be ...
- 5,169
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