prog.c: In function ‘main’: prog.c:15:9: error: case label does not reduce to an integer constant case b: ^~~~ prog.c:5:11: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] int a,b; ^ How to fix?
If the value of the integer constant is too big to fit in any of the types allowed by suffix/base combination,it does not have suffixeswb,WB,uwb, orUWB(since C23)and the compiler supports extended integer types (such as__int128), the constant may be given the extended integer type; ...
In this article Syntax See also An integer constant is a decimal (base 10), octal (base 8), or hexadecimal (base 16) number that represents an integral value. Use integer constants to represent integer values that can't be changed. Syntax integer-constant: decimal-constant integer-suffix...
SeeConstant Overflows from Binary Operations. Ann-bit signed integer holds values in the range [-2n-1, 2n-1-1]. For instance,cis an 8-bit signedcharvariable that cannot hold the value 255. signed char c = 255; This defect checker depends on the following options: ...
Microsoft C also permits the declaration of sized integer variables, which are integral types of size 8-, 16-, 32- or 64-bits. For more information on sized integers in C, seeSized Integer Types. Limits on Integer Constants ConstantMeaningValue ...
When multiplying integers with a constant value in C, with Zmmul gcc apparently tries to not emmit mul instructions (it may do it for large constants). Instead it tries to implement the operation with some shift and add immediate instruc...
针对错误信息“[error] invalid suffix 'a' on integer constant”,我们可以从以下几个方面进行分析和解答: 1. 错误信息理解 错误信息含义:“invalid suffix 'a' on integer constant”表明在编程时,尝试给整数常量添加了一个非法的后缀“a”。在大多数编程语言中,整数常量通常只能以数字字符结尾,而不能包含字母字...
prog.c: In function ‘main’: prog.c:7:9: error: switch quantity not an integer switch(choice){ ^~~~ prog.c:5:9: warning: variable ‘choice’ set but not used [-Wunused-but-set-variable] float choice = 2.0f; ^~~~ How to...
在整形常量上使用了不正确的后缀"f"f是浮点常量不想用double而是float时用的 整数的话至少最后加个小数点也行啊 : 1.f 1.0f 是
数学表达式不能全部直接应用到C语言：2n改成2*n