1. 在 PC 机上使用 C 语言，若有如下定义： struct data { int i; char ch; float f; }a; 则结构变量 a 占用内存的字节数是

I单项选择 1.抽样频率 a. sampling rate b. repetition rate c. sampling frequency 答案:c 2.数字通信 a. digital communication b. digital transmission. transmission path 答案:a

#include void maino for(i=l;i<=5;++) *外循环的次数为需打印的行数* for(=1j<=2*i-1j+)/*内循环的次数由所打印行数决定*

#include int*pa(2F=(a(0],a[l]i printf(\这是一个指针数组初始化的程序例子!n\), printf(\请输入数组a的10个整数元素:mn”)

69 Broadcasting R.C. Dorf, Z. Wan, J.F. Lindsey I, D.F. Doelitzsch, J. Whitaker, M.S. Roden, S. Salek, A. H. Clegg Modulation and Demodulation. Radio. Television Systems. High-Definition Television. Digital Audio Broadcasting

#include void maino int i, *p, a[10] /指针指向数组a的首地址*

#include void maino short S long int I float f

#include void maino int n=I printi(40以内能同时被3和4整除的数有:m”)

where, R(Qi) is the revenue function and C(Qi) is the cost function of firm i. For profit maximisation the derivative of profit is zero, which amounts to saying that the derivative of revenue is equal to the derivative of cost: MRi

#include void maino int n=I printi(40以内能同时被3和4整除的数有:m”)