Output 1.
Common format message output:
| Formatting symbols | conversion |
|---|---|
| %c | character |
| %s | string |
| %d | Signed decimal integer |
| %u | An unsigned decimal integer |
| %o | Octal integer |
| %x | Hexadecimal integer (lowercase 0x) |
| %X | Hexadecimal integer (uppercase 0X) |
| %f | Floating point Numbers |
| %e | Scientific notation (lowercase ‘e’) |
| %E | Scientific notation (capital “E”) |
| %g | Short for % f and % e |
| %G | Short for % f and % E |
