Recently I found a weird thing in shell script. It behave different with how I think when I using ~ (bitwise not operation). Following is sample code in shell:
function items() {
local expected="$1"
local input="$2"
try "$expected" "int main(int argc, int argv) { $input }"
}
function expr() {
local expected="$1"
local input="$2"
items "$expected" "exit($input);"
}
expr 18 "~237"
18 is expected value for ~237, but in ｃ is -238.
binary in 18 is : .000010010
binary in 237 is : .011101101
I think result in C is right but why behave like this?
