CODEWITHSUNDEEP
cwindowsconsole
jsjclink
jsjclink

Reputation: 39

In my console game with C, '90' is printed instead of '9'

I was making a console game with C on Visual Studio 2019. I made a code that print a variable.

It works only when value is greater than 10 .

If value of variable is less than 10 it prints 10 instead of 1, 2 instead of 20 ... 9 instead of 90.

I have no idea how to solve this problem.

Here is my code

#include<stdio.h>
#include<windows.h>

int a =20;

void gotoxy(int x, int y) { //cursor goes to x, y
    COORD CursorPosition = { x,y };
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), CursorPosition);
}

void HideCursor() {
    HANDLE consoleHandle = GetStdHandle(STD_OUTPUT_HANDLE);
    CONSOLE_CURSOR_INFO info;
    info.dwSize = 100;
    info.bVisible = FALSE;
    SetConsoleCursorInfo(consoleHandle, &info);
}

void count() {
    char c = _getch();
    switch (c) {
    case 'p': a++; break;
    case 'o': a--; break;
    }
}

int main() {
    system("mode con cols=10 lines=10");
    system("cls");
    HideCursor();
    while (1) {
        gotoxy(5, 5);
        count();
        printf("%d", a);
    }
}

Upvotes: 1

Views: 69

Answers (1)

Some programmer dude
Some programmer dude

Reputation: 409166

It's because you don't overwrite the second digit if a becomes a single-digit number. You need to overwrite all previously written digits, for example by setting a field width:

// Print right-justified numbers, with empty spaces for one or two digit numbers
printf("%3d", a);

Upvotes: 5

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