Thus, a compound if statement in Python looks like this:Python 1if <expr>: 2 <statement> 3 <statement> 4 ... 5 <statement> 6<following_statement> Here, all the statements at the matching indentation level (lines 2 to 5) are considered part of the same block. The entire block is ...
r"", u"", and f"". */intsaw_b =0, saw_r =0, saw_u =0, saw_f =0;while(1) {if(!(saw_b || saw_u || saw_f) && (c =='b'|| c =='B'))
If you want to do something with the result of an expression, you need to say so: you might store it with an assignment statement or return it with a return statement. 1.5.2 Compound Statements A compound statement is so called because it is composed of other statements. a header and an...
2、Control statements:控制语句(if,do while,for,) 3、Compound statements: 4、Input statements 5、Output statements 八 控制语句: 8.1 if-else 语法:if (condition) {then-body} else {[ else-body ]} 例子: awk -F: '{if ($1=="root") print $1, "Admin"; else print $1, "Common User"}...
... if_stmt ::= "if" expression ":" suite ("elif" expression ":" suite)* ["else" ":" suite] ... suite ::= stmt_list NEWLINE | NEWLINE INDENT statement+ DEDENT statement ::= stmt_list NEWLINE | compound_stmt ... stmt_list ::= simple_stmt (";" simple_stmt)* [";"] ...
expression : 是什么 比如: 1+2是3, 1+2就是expression, 3 就是expression的 value statement: 做...
分支语句通常在if/elif/else中实现。另外,使用for或者while循环语句也能更改语句的执行顺序。Python能够自动识别语句和代码块的范围,因此不需要在语句块前后增加括号或者分隔符。实际上,Python使用缩进来组合语句块。许多程序语言使用分号作为语句的结尾,而Python使用行结束符来标识语句结尾。复合语句(compound statement)会...
When the conditional part of an if-statement is long enough to require that it be written across multiple lines, it's worth noting that the combination of a two character keyword (i.e. if), plus a single space, plus an opening parenthesis creates a natural 4-space indent for the subsequ...
Although running the statement number = 1 + 2 doesn’t evaluate to 3, it does assign the value 3 to number. In Python, you often see simple statements like return statements and import statements, as well as compound statements like if statements and function definitions. These are all ...
Compound statements (multiple statements on the same line) are generally discouraged. Yes: if foo == 'blah': do_blah_thing() do_one() do_two() do_three() 1. 2. 3. 4. 5. Rather not: if foo == 'blah': do_blah_thing() ...