下表列出了所有Tcl語言支持的算術(shù)運(yùn)算符。假設(shè)變量A=10,變量B=20,則:
運(yùn)算符 | 描述 | 例子 |
---|---|---|
+ | 兩個(gè)數(shù)相加 | A + B = 30 |
- | 第一個(gè)操作數(shù)減去第二個(gè)操作數(shù) | A - B = -10 |
* | 兩個(gè)操作數(shù)相乘 | A * B = 200 |
/ | 分子(B)除以分母(A) | B / A = 2 |
% | 模運(yùn)算和整數(shù)除法后的余數(shù) | B % A = 0 |
試試下面的例子就明白了所有Tcl語言中可用的算術(shù)運(yùn)算符:
#!/usr/bin/tclsh set a 21 set b 10 set c [expr $a + $b] puts "Line 1 - Value of c is $c\n" set c [expr $a - $b] puts "Line 2 - Value of c is $c\n" set c [expr $a * $b] puts "Line 3 - Value of c is $c\n" set c [expr $a / $b] puts "Line 4 - Value of c is $c\n" set c [expr $a % $b] puts "Line 5 - Value of c is $c\n"
當(dāng)編譯和執(zhí)行上面的程序,它會(huì)產(chǎn)生以下結(jié)果:
Line 1 - Value of c is 31 Line 2 - Value of c is 11 Line 3 - Value of c is 210 Line 4 - Value of c is 2 Line 5 - Value of c is 1