Nettet21. mai 2015 · int b=1, c=2, d=3, e=4; int a = b * (c * d * + e); The generated assembly (using gcc, compiling for amd64) begins with: movl $1, -20(%ebp) movl $2, -16(%ebp) … Nettet4. jul. 2013 · Does int a=1, b=a++; invoke undefined behavior? There is no sequence point intervening between the initialization of a and its access and modification in the …
有以下程序 #include<stdio.h> main() int a=-2,b=0; …
NettetThe requirements of this paragraph shall be met for each allowable ordering of the subexpressions of a full expression; otherwise the behavior is undefined. printf ("%d %d %d\n",++a, a++,a); could do a number of things; work how you expected it, or work in ways you could never understand. You shouldn't write code like this. NettetIn an implementation, when we require to change the initial value of the variable by 1, then go for increment/decrement operators. I.e “++,--“. When we are working with increment/decrement operator the difference b/w existing value and a new value is +1 and -1 only. Depending on the position, these operators are classified into two types. rally point harley
c - printf("%d %d %d\n",++a, a++,a) output - Stack Overflow
Nettet14. aug. 2024 · 第一次循环 结束 a = -1,b = 1; 第二次循环开始时 a = -1,b =1; 第二次循环结束 a = 0,b = 2; 第三次循环开始 a = 0,b =2; 结果a=0了,while判断此时的a不满足条件 … Nettet31. aug. 2024 · C语言会同意一些"令人震惊"的结构,下面的结构是合法的吗,我们来看看几个例子。c = a+++b; 以下代码是合法的吗,咋的一看不禁有这样的疑问?int a = 5, b = 7, c; c = a+++b; 这个代码确实不咋符合习惯的写法,但是不管你相不相信,上面的例子是完全合乎语法的。 Nettetint i=1, z=0; while( z < n*(n+1)/2 )//arithmetic series, runs n times { z+=i; i++; } My Answer: O(n) That's correct! Part (l) That's odd, there is no part (l). Part (m) int a = 0; int k = … rally point synonym