#include enum struct Kind { Int, UInt, Float, Char, Ptr, }; template const char *prefix() = delete; template<> const char *prefix<1, Kind::Char>() { return "char"; } template<> const char *prefix<1, Kind::Int>() { return "int8_t"; } template<> const char *prefix<1, Kind::UInt>() { return "uint8_t"; } template<> const char *prefix<2, Kind::Int>() { return "int16_t"; } template<> const char *prefix<2, Kind::UInt>() { return "uint16_t"; } template<> const char *prefix<4, Kind::Int>() { return "int32_t"; } template<> const char *prefix<4, Kind::UInt>() { return "uint32_t"; } template<> const char *prefix<8, Kind::Int>() { return "int64_t"; } template<> const char *prefix<8, Kind::UInt>() { return "uint64_t"; } template<> const char *prefix<4, Kind::Float>() { return "float"; } template<> const char *prefix<8, Kind::Float>() { return "double"; } template<> const char *prefix<4, Kind::Ptr>() { return "void *"; } template<> const char *prefix<8, Kind::Ptr>() { return "void *"; } void print_n(char n) { printf("%s: %c\n", prefix(), n); } void print_n(signed char n) { printf("%s: %hhi\n", prefix(), n); } void print_n(unsigned char n) { printf("%s: %hhu\n", prefix(), n); } void print_n(signed short n) { printf("%s: %hi\n", prefix(), n); } void print_n(unsigned short n) { printf("%s: %hu\n", prefix(), n); } void print_n(signed int n) { printf("%s: %i\n", prefix(), n); } void print_n(unsigned int n) { printf("%s: %u\n", prefix(), n); } void print_n(signed long n) { printf("%s: %li\n", prefix(), n); } void print_n(unsigned long n) { printf("%s: %lu\n", prefix(), n); } void print_n(signed long long n) { printf("%s: %lli\n", prefix(), n); } void print_n(unsigned long long n) { printf("%s: %llu\n", prefix(), n); } void print_n(float n) { printf("%s: %g\n", prefix(), n); } void print_n(double n) { printf("%s: %g\n", prefix(), n); } void print_n(void *n) { printf("%s: 0x%.16zX\n", prefix(), (size_t)n); } void print_n(char *s, char n) { printf("%s: %c\n", s, n); } void print_n(char *s, signed char n) { printf("%s: %hhi\n", s, n); } void print_n(char *s, unsigned char n) { printf("%s: %hhu\n", s, n); } void print_n(char *s, signed short n) { printf("%s: %hi\n", s, n); } void print_n(char *s, unsigned short n) { printf("%s: %hu\n", s, n); } void print_n(char *s, signed int n) { printf("%s: %i\n", s, n); } void print_n(char *s, unsigned int n) { printf("%s: %u\n", s, n); } void print_n(char *s, signed long n) { printf("%s: %li\n", s, n); } void print_n(char *s, unsigned long n) { printf("%s: %lu\n", s, n); } void print_n(char *s, signed long long n) { printf("%s: %lli\n", s, n); } void print_n(char *s, unsigned long long n) { printf("%s: %llu\n", s, n); } void print_n(char *s, float n) { printf("%s: %g\n", s, n); } void print_n(char *s, double n) { printf("%s: %g\n", s, n); } void print_n(char *s, void *n) { printf("%s: 0x%.16zX\n", s, (size_t)n); }

print_n via printf