C语言速查手册:运算符(Operators) 运算符是执行特定操作的符号,它主要用于表达式的构成。在C语言中运算符有很多种操作符,主要包括以下几种运算符: 算术运算符 关系运算符 逻辑运算符 位运算符 赋值运算符 杂项运算符 算术运算符 算术运算符主要是一些算术运算,例如加减乘除等。详细的运算规则如下表: 示例: #inclu...
最后,这行代码表示程序正常结束,并将零作为返回值传递给操作系统。 关系操作符(Relational Operators) ‘==’:等于操作符,检查两个操作数是否相等。 ‘!=’:不等于操作符,检查两个操作数是否不相等。 ‘>’:大于操作符,检查左操作数是否大于右操作数。 ‘<’:小于操作符,检查左操作数是否小于右操作数。 ‘>=...
Unary Operators: take only one argument e.g. unary -, unary +, ++, --, ! (-2), (+2), a++, a--, !done Binary Operators: take two arguments e.g. binary -, binary +, *, /, %, =, +=, -=, *=, /=, %= (a - 2), (a + 2), (a * 2), (a / 2), (a % 2...
1n:0, sizeof(n):4,allints have4bytes. sizeof返回size_t类型的值,它是一个无符号整数类型,但它不是新类型。C 有一个 typedef 机制,允许对类型起别名,C 头文件系统可以使用 typedef 把 size_t 作为 unsigned int 或 unsigned long 的别名。size_t 类型可以用 %zd 转换符打印(C99),如果系统不支持,可...
Constructors构造函数,用于字符串初始化Operators操作符,用于字符串比较和赋值append()在字符串的末尾添加文本assign()为字符串赋新值at()按给定索引值返回字符begin()返回一个迭代器,指向第一个字符c_str()将字符串以C字符数组的形式返回capacity()返回重新分配空间前的字符容量compare()比较两个字符串copy()将内容...
Example 1: Arithmetic Operators // Working of arithmetic operators #include <stdio.h> int main() { int a = 9,b = 4, c; c = a+b; printf("a+b = %d \n",c); c = a-b; printf("a-b = %d \n",c); c = a*b; printf("a*b = %d \n",c); c = a/b; printf("a/b...
The logical operators are || for a logical or and && for a logical and and ! for logical not. The and and or operate on two boolean values of true or false. In C, an expression that evaluates to 0 is false and an expression that evaluates to non-zero is true. These operators ...
The multiplicative operators perform multiplication (*), division (/), and remainder (%) operations.Syntaxmultiplicative-expression: cast-expression multiplicative-expression * cast-expression multiplicative-expression / cast-expression multiplicative-expression % cast-expression...
The multiplicative operators perform multiplication (*), division (/), and remainder (%) operations.Syntaxmultiplicative-expression: cast-expression multiplicative-expression * cast-expression multiplicative-expression / cast-expression multiplicative-expression % cast-expression...
The additive operators perform the usual arithmetic conversions on integral and floating operands. The type of the result is the type of the operands after conversion. Since the conversions performed by the additive operators don't provide for overflow or underflow conditions, information may be lost...