根源来自于默认类型。如果不在编译环境特殊指明的话，浮点数默认double型，而即便是同一个浮点数，其single和double的值是不同的，比较必然FALSE。程序中加上强制类型就可以解除（当然也可以修改编译器默认类型设置），如下图所示：
strcmp是C语言比较字符串的库函数，形式为int strcmp(char *a, char *b);该函数会对a和b的每个字符，按照ascii码值比较，如果二者完全相同返回0；如果a的ascii码值先出现较大者，会返回1；否则返回-1。所以，要判断字符串相等，可以使用。
在C语言中，else 和 elseif（或 else if）都是条件语句的关键字，它们用于控制程序的流程。这两个关键字的主要区别在于它们的使用方式和逻辑。else：else 语句在 if 语句之后使用，当 if 条件不满足时执行 else 语句块。例如：在这个例子中，如果变量 num 的值大于10，程序会输出 "Number is greate...
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百度试题 结果1 题目if(x= =y):print('Equal)else:print(No Equal) A. 编译错误 B. 运行时错误 C. Equal D. Not Equal 相关知识点: 试题来源: 解析 D 反馈 收藏
这部分代码使用条件语句if-else进行比较。首先,判断a是否等于b,如果相等,则执行if代码块中的语句,并打印 “a is equal to b”。如果不相等,则执行else代码块中的语句,并打印 “a is not equal to b”。 代码语言:javascript 复制 if(a>b){printf("a is greater than b\n");} ...
LESS_EQUAL:左边小于等于右边时为真(数值比较)。格式为:if(<variable|string> LESS_EQUAL <variable|string>)。 GREATER:左边大于右边时为真(数值比较)。格式为:if(<variable|string> GREATER <variable|string>)。 GREATER_EQUAL:左边大于等于右边时为真(数值比较)。格式为:if(<variable|string> GREATER_EQUAL ...
The parameter nWidth must be greater than or equal to 0. Otherwise, this method throws an exception.If nWidth is set to 0, this method sets the dialog box to the default size.ExampleC++ Copy // TODO: Replace the strings below with the appropriate message, // main instruction, and ...
The C++ standard has always required that n must be equal to the value passed as the first argument to the invocation of allocate, which returned p. However, in the current version, the value of n is inspected. Code that passes arguments for n that differ from what the standard requires ...