Not working real number in c

Question

I am facing very very strange issue. I am writing very simple program in C.

Program needs to do: read real number and display it on console.

#include <stdio.h>

int main()
{
    double a;
    printf("Give a: ");
    scanf("%f",&a);
    printf("Result for a = %f \n",a);
    return 0;
}

output:

sh-4.3$ gcc -o main *.c                                                                                                                                                                                                                                
sh-4.3$ main                                                                                                                                                                                                                                           
Give a: 123.345                                                                                                                                                                                                                                        
Result for a = 0.000000

http://goo.gl/4j2Bjv

Why there is 0.0000 instead of my number? Personally I have no idea.... code from this site is working fine.

Any idea?

There was an equivalent question recently asked here. There are tons of duplicates here on SO, I think. — cadaniluk, Oct 21 '15 at 21:33
@cad right http://stackoverflow.com/questions/33269283/scanf-not-reading-in-double#33269387 here, in fact — user2085282, Oct 21 '15 at 21:34
...but http://stackoverflow.com/questions/33180158/why-is-the-program-printing-0s — Martin James, Oct 21 '15 at 23:40

score 3 · Accepted Answer · answered Oct 21 '15 at 21:33

3

Use %lf conversion specification to read a double, %f is for float.

answered Oct 21 '15 at 21:33

ouah

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OTOH... http://stackoverflow.com/questions/33180158/why-is-the-program-printing-0s – Martin James Oct 21 '15 at 23:40

Not working real number in c

1 Answers1