''' 【程序45】 题目:学习使用register定义变量的方法。 1.程序分析: 2.程序源码: 没有registerkeyword,用整型变量取代 ''' tmp = 0 for i in range(1,101): tmp += i print 'The sum is %d' % tmp
''' 【程序46】 题目:宏#define命令练习(1) 1.程序分析: 2.程序源码: 没有C语言的宏,就这么写了 ''' TRUE = 1 FALSE = 0 def SQ(x): return x * x print 'Program will stop if input value less than 50.' again = 1 while again: num = int(raw_input('Please input number')) print 'The square for this number is %d' % (SQ(num)) if num >= 50: again = TRUE else: again = FALSE
''' 题目:宏#define命令练习(2) 1.程序分析: 2.程序源码: #include "stdio.h" #define exchange(a,b) { \ /*宏定义中同意包括两道衣裳命令的情形,此时必须在最右边加上"\"*/ int t;\ t=a;\ a=b;\ b=t;\ }' 这个宏定义python不支持 ''' def exchange(a,b): a,b = b,a return (a,b) if __name__ == '__main__': x = 10 y = 20 print 'x = %d,y = %d' % (x,y) x,y = exchange(x,y) print 'x = %d,y = %d' % (x,y)
''' 【程序48】 题目:宏#define命令练习(3) 1.程序分析: 2.程序源码: #define LAG > #define SMA < #define EQ == #include "stdio.h" void main() { int i=10; int j=20; if(i LAG j) printf("\40: %d larger than %d \n",i,j); else if(i EQ j) printf("\40: %d equal to %d \n",i,j); else if(i SMA j) printf("\40:%d smaller than %d \n",i,j); else printf("\40: No such value.\n"); } 不知道怎样用python实现相似的功能 ''' if __name__ == '__main__': i = 10 j = 20 if i > j: print '%d larger than %d' % (i,j) elif i == j: print '%d equal to %d' % (i,j) elif i < j: print '%d smaller than %d' % (i,j) else: print 'No such value'
''' 【程序49】 题目:#if #ifdef和#ifndef的综合应用。 1. 程序分析: 2.程序源码: #include "stdio.h" #define MAX #define MAXIMUM(x,y) (x>y)?x:y #define MINIMUM(x,y) (x>y)?y:x void main() { int a=10,b=20; #ifdef MAX printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #else printf("\40: The lower one is %d\n",MINIMUM(a,b)); #endif #ifndef MIN printf("\40: The lower one is %d\n",MINIMUM(a,b)); #else printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #endif #undef MAX #ifdef MAX printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #else printf("\40: The lower one is %d\n",MINIMUM(a,b)); #endif #define MIN #ifndef MIN printf("\40: The lower one is %d\n",MINIMUM(a,b)); #else printf("\40: The larger one is %d\n",MAXIMUM(a,b)); #endif } 这个还是预处理的使用方法,python不支持这种机制,演示lambda的使用。 ''' MAXIMUM = lambda x,y : (x > y) * x + (x < y) * y MINIMUM = lambda x,y : (x > y) * y + (x < y) * x if __name__ == '__main__': a = 10 b = 20 print 'The largar one is %d' % MAXIMUM(a,b) print 'The lower one is %d' % MINIMUM(a,b)
转载于:https://www.cnblogs.com/bhlsheji/p/4338911.html
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