Compute the results of ch nn an ff if char chaC42 int nn3aG

Compute the results of ch, nn, an ff if: char ch=\'a\'-\'C\'+42\'; int nn=3+\'a\'-\'G\'; float ff=1.0+\'a\'/\'X\';

Solution

1)
char ch=\'a\'-\'C\'+42

ascii code for \'a\'=97,\'C\'=67
so 97-67+42=72
char value of 72 is H, so value of ch will be H.

2)
int nn=3+\'a\'-\'G\';
ascii code for \'a\' = 97, \'G\'=71
=> 3+97-71=29
so value of nn is 29

3)
float ff=1.0+\'a\'/\'X\';
ascii value for \'a\'=97, \'X\'=88
=> 1.0+97/88
=>1.0+1
=>2

so value of ff will be 2

Thanks a lot