C types size and values

sizeof.sh

#!/usr/bin/env sh
# How to use:
# 1. `sh sizeof.sh`
# 2. ????
# 3. PROFIT!!!
cat << EOF | cc -Wall -Wextra -pedantic -O3 -static -o sizeof -x c - &&
#include <stdio.h>
#define issigned(type) ((type)(0-1)>0)
#define umaxof(t) (((0x1ULL<<((sizeof(t)*8ULL)-1ULL))-1ULL)|(0xFULL<<((sizeof(t)*8ULL)-4ULL)))
#define smaxof(t) (((0x1ULL<<((sizeof(t)*8ULL)-1ULL))-1ULL)|(0x7ULL<<((sizeof(t)*8ULL)-4ULL)))
#define maxof(t) ((unsigned long long)(issigned(t)?umaxof(t):smaxof(t)))
int main(void){printf(
"+-------------------------------------------------------+\n"
"| Type                | Size (B) | Max Value            |\n"
"+---------------------+----------+----------------------+\n"
"| unsigned char       | %2lu       | %20llu |\n"
"| unsigned short      | %2lu       | %20llu |\n"
"| unsigned int        | %2lu       | %20llu |\n"
"| unsigned long       | %2lu       | %20llu |\n"
"| unsigned long long  | %2lu       | %20llu |\n"
"| char                | %2lu       | %20llu |\n"
"| short               | %2lu       | %20llu |\n"
"| int                 | %2lu       | %20llu |\n"
"| long                | %2lu       | %20llu |\n"
"| long long           | %2lu       | %20llu |\n"
"+---------------------+----------+----------------------+\n",
sizeof(unsigned char),maxof(unsigned char),sizeof(unsigned short),maxof(unsigned short),sizeof(unsigned int),maxof(unsigned int),sizeof(unsigned long),maxof(unsigned long),sizeof(unsigned long long),maxof(unsigned long long),sizeof(char),maxof(char),sizeof(short),maxof(short),sizeof(int),maxof(int),sizeof(long),maxof(long),sizeof(long long),maxof(long long));return 0;}
EOF
strip -s sizeof && ./sizeof && rm sizeof