1 0 -100 +123
3.14 0.112 4.0 -4.5 1.3e+2 1.1e-10
1.3d+2 1.1d-10
(1,2) (1.1,2) (1.1e+4,3.4e-2)
.true. .false.
'a' 'hello world' 'he said, "hello"' 'he said, ''hello'''
parameter(pi=3.14, max=100)