I have a lot of java background and am new to C. If the input integer is 11031, I want to count the number of 1's digits, how would I ... |
i have to make a user input num/percentage pairs. the code looks like:
while(choice != 0)
{
printf("enter number");
fgets(line, sizeof(line), stdin);//sizeof(line) is 6
sscanf(line, "%d\n", choice);
if(choice > ...
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I want to process user input as an integer, but it seems as though C has no way to get an int from stdin. Is there a function to do this? ... |
I want to prevent my program from any other types of input instead of int. How to check the type of an input without assigning it to a variable? in C
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I would like to have readline accept an int. What is the best way to accomplish this? I have no problem accepting string input like so:
char *usrname; // define user ...
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I am currently just learning C and for a project I need to read in integer inputs from the user. Currently I am using code that looks like this:
#include <stdio.h>
#include <stdlib.h>
int ...
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Hi All, I have a number guessing game in which users try to guess a random number. Obviously, input is required of type int. BUT, when a user inputs a string the program will result in an undesired infinite loop. Now, I know a string is not what we're after but in terms of error-handling; How can we prevent users from ... |
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Hi, I'm working on a tic-tac-toe program and one of my modules needs to take an integer value from the user and confirm it was valid integer input and print an error message if it is wrong and prompt the user to enter again. I am not allowed to use a string and my other issue is that the function prototype ... |
int getInt(int max, int maxLength){ char input[maxLength]; char c; int i; printf("Enter an integer: "); for (i = 0;(c = getchar())!='\n';++i){ if (i < maxLength-1){ if (!isdigit(c) && (c !='-')){ printf("Number contains non-digit characters. Exiting."); exit(0); } input[i] = c; } else { printf("Number was too long. Exiting"); exit(0); } } int result = atoi(input); if (result <= max){ return result; ... |
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Help, I'm a C noob, and need help writing this program: The program will request input of an integer number. if the entered number matches a specific number(an ID number) it will continue. If the entered number does not match the specific number, it has to request a new number. If a "q" is entered it will quit. I have the ... |
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#include int main ( void ) { int c; FILE*fp=fopen("myfile.dat","w"); if(!fp){exit(0);} puts("Enter numbers seperated by spaces. Terminate input by pressing ENTER."); while( (c=fgetc(stdin)) != '\n' ) fputc( c, stdout ); fclose( fp ); fp = fopen("myfile.dat","r"); /** *** Now, read an integer using fscanf() and conver to binary. *** repeat until the file is done. **/ return 0; } |
20. integer input cboard.cprogramming.comHere is my code so where does the new part fit in? # include # include void main(void) { int age; char answer; clrscr(); do { { printf("Please enter your age for a honest comment!\n"); scanf("%d", &age); fflush(stdin); clrscr(); if (age <= 0) printf("\nSorry thats not possible:-(\n"); else if (age == 1 || age <= 29) printf("\nIf you are ... |
This is not part of my assignment, but I would like to figure out how to test the user input to be sure it is an integer. Is there a native function that I can use? If nit can some one point me in the right dirrection because I am drawing a blank. At first I thought I would do this ... |
I'm writing a two-user tic-tac-toe game and have put a lot of my (beginner) effort into it. It works flawlessly... unless at the input for a digit 1-9 you input a letter or letters. Then it goes into a spiral of a loop. First I tried changing the input to char ('movc'), testing with isdigit(), and then casting it into my ... |
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Ok.. basic easy question... just trying to figure out a fun way of doing it with my limited C knowledge. I am trying to figure out a way to limit an input to be only an integer between 0 and 5. I have the answer to the number range, and have seen various ways of limiting it to an integer, but ... |
/* Read in a number of values to read and then print the average * of those values. */ #include int main() { /* Declare variables */ int expected; int count; double sum; int value; /* While the input (number of values) is not equal to end of file */ while (scanf("%d", &expected) != EOF) { /* Initializee sum at ... |
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Well, accept input differently. In other words, validate the incoming data to make sure it's what you want/expect. I'll give you some hints: 0) You don't *have* to accept the data directly into the array 1) The array doesn't *have* to be an array of integers. Go forth, and code. |