c finding multiples of a number using static variables?

Question

#include<stdio.h>

void function(void);


void main (void)
{
    int number;
    printf("call? yes(1) no(-1)");
    scanf("%d", &number);
    while(number>=0)
    {
        function();
        printf("call? yes (1) no (-1)");
        scanf("%d", &number);

    }
}


void function(void)
{
    static int multiple = 2;
    printf("%d", &multiple);
    multiple = multiple*2;

}

hi this is my code for finding 2 multiplied by a number . i wanted it to print out 2,4,8,16 etc. however im getting some big number when i run this code. i just started learning c so any comment is appreciated

`printf("%d", &multiple);` Remove `&` --> `printf("%d\n", multiple);` — BLUEPIXY, Sep 06 '17 at 07:39
You can use -g flag in gcc in order to debug why your getting big number. Debugging your program will help you to know what's causing the problem..by the way you don't use & printf for static int type. — danglingpointer, Sep 06 '17 at 07:40
Start with `gcc -Wall -Wextra` - that will help diagnose the mistake. — Toby Speight, Sep 06 '17 at 11:49

score 3 · Answer 1 · edited Sep 06 '17 at 23:24

3

In the printf(), the address of multiple is printed. Change the printf("%d", &multiple); to printf("%d\n", multiple);.

edited Sep 06 '17 at 23:24

Jonathan Leffler

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answered Sep 06 '17 at 07:42

Nerdy

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score 2 · Answer 2 · answered Sep 06 '17 at 07:42

2

Remove the & from your print.

Change this:

printf("%d", &multiple);

to this:

printf("%d", multiple);

PS: What should main() return in C and C++?

answered Sep 06 '17 at 07:42

gsamaras

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i have removed & but it is still giving me the same number. is my while statement wrong? – andy kim Sep 06 '17 at 07:48
1

@andykim Have you re-built after change? – BLUEPIXY Sep 06 '17 at 07:57

c finding multiples of a number using static variables?

2 Answers2