while-loop

This loop won't terminate if I add an OR conditional statement. If one is false, then it should terminate. //global var int x = 100; char *n= malloc (64); void add(void) { do { printf("Would you like to add 1? (y/n) "); fgets(n, 64, stdin); //removes newline n[strlen(n)-1] = '\0'; x++; } //if I add || (x!=100) it keeps looping me even if I press "n" //otherwise without it it works fine while((strncmp(n, "n", 1) != 0) || x!=100 ); free(n); } At the bottom of your loop, you're doing x++ . Once you hit the while condition, x == 101 , so your loop never terminates, x never equals 100 when the

I wrote a solution to an exercise that asks to write a program that acts as a simple "printing" calculator, and also detects division by zero and checks for unknown operators. The program works as intended when expected operators are entered. For example: "100 S" prints "= 100.000000" "2 /" prints "= 50.000000" "10 *" prints "= 500.000000" It also detects division by zero and unknown operators. However, when I enter operators in wrong order, like this: "/ 2" or "* 10", the program is stuck in a loop. How do I fix this bug so that when the operators are entered in wrong order, it just prints

I have a hard time figuring out why the while loop won't actually loop. It runs through once and stops. import java.util.*; public class mileskm { public static void main(String[] args) { Scanner inp = new Scanner(System.in); boolean continue1 = true; while (continue1 == true) { System.out.println("Would you like to convert m-km or km-m(km for m-km and m for km-m)"); String convert = inp.nextLine(); if (convert.equalsIgnoreCase("km")) { System.out.println("Enter the mileage to be converted."); double num = inp.nextDouble(); double con = num * 1.60934; System.out.println(con); continue1 = true;

It's the second day I try to find a solution for this problem. I have an array. $datas; $datas[0]; // 8000 $datas[1]; // 8001 $datas[2]; // 8003 $datas[3]; // 8004 I have to find the first missing number starting from 8000 in this case it's 8002. My idea is to do somethig like this: $datas[0] +1 = $datas[1] if it's true port it's not free and I have to check the next one, if it's false it's the first free number. I know it's not a correct syntax but I have some problems writing it in the right way. You can use array_diff to find the missing value. I create a new array with values from min of

I've tried to compile a code using a bool variable in C and I've included the stdbool header but when I compiled it I didn't specify that I want to compile it with the c99 standard (so it was compiled with ANSI C standard) but it worked anyway. I was wondering why is that ? Here's the code : #include <stdio.h> #include <stdbool.h> int main() { char name[20]; printf("What's your name ? "); gets(name); printf("Nice to meet you %s.\n", name); bool exit = false; char c; printf("Do you wish to exit the program ? (Y/N) "); while (!exit) { c = getchar(); if (c == '\n') { continue; } printf("Do you

I have to create a menu wherein if the input is not valid. It should keep asking for a valid input. I've written it below (in C) #include <stdio.h> int main() { int input = 0; printf("What would you like to do? \n 1 (Subtraction) \n 2 (Comparison) \n 3 (Odd/Even) \n 4 (Exit) \n "); scanf_s("%d", &input); while (input != 1 || input != 2 || input != 3|| input != 4) { printf("Please enter a valid option \n"); scanf_s("%d", &input); } // At this point, I think it should keep testing variable input and if it's not either 1 or 2 or 3 or 4. It would keep looping. But what's happening is it loops even

I'm having a bit of an issue with a while/if statement. I have a list of values, normally these values will be strings, but sometimes it can return None. Here are two of my attempts: x = ['One','Two','Three',None,None] New = [] count=0 for y in x: while isinstance(y,str): New.append(y) count+=1 break else: count+=1 New.append('New - '+str(count)) print New,count >>> The list repeats several times New = [] for y in x: count=0 if y is not None: New.append(y) count+=1 else: count+=1 New.append('New - '+str(count)) >>>['One','Two','Three','New - 1','New - 1'] I would like the output to be: ['One',

http://i.stack.imgur.com/XvHm5.png When I click the On button it should start spamming 1's across the JTextField. Instead The entire GUI freezes, including the close button. I am using a while loop that will stop when you click the jButton again. Because the jButton is frozen i cannot stop this program. I have read that Threads and Multithreading would help but all of the tutorials are too complex for me to understand. They say to put the loop and GUI on different threads. I want to understand this to fix another program that I am working on which is much more complex. Thats why I made a