'f' 'k' it doesn't work. When I change them with numbers it works but by the letters it doesnt... why??

Question

#include
int main()
{
double a;
char w;
scanf("%d",&w);

switch (w)
{
case 'f':
scanf("%lf", &a);
printf("F %lf",32.0+1.8*a);
break;
case 'k':
scanf("%lf", &a);
printf("K %lf",a+273);
break;
default:
printf("\n Enter f for foreignfeet, k for kelvin\n");
}
return 0;
}

Answer 1

use getchar() instead of scanf. if you want to use scanf replace the line scanf("%d",&w); with scanf("%c",&w); w = getchar(); is preferable to using scanf. scanf can suprise you reading newline characters from the character buffer.

Answer 2

scanf("%d",&w);

You said %d which means integer only. You probably meant to say %c which means single character.

Answer 3

i&#
dun-
o
)
(6*9

Answer 4

what the huh!?