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I prefer writing a term paper ________ taking an examination.
A. than
B. to
C. for
D. rather than
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下面程序的功能是计算1*2*3 + 3*4*5+…+ 99*100*101的值。按要求在空白处填写适当的表达式或语句,使程序完整并符合题目要求。#include <stdio.h> int main() { long i ; long term, sum = 0; for (i=1;_______; i=i+2) { term = ______________; sum = sum + term; } printf("sum = %ldn", sum); return 0; }A.第6行: i<=99 第8行: i * (i + 1) * (i + 2)B.第6行: i≤99 第8行: i (i + 1) (i + 2)C.第6行: i<99 第8行: (i + 1) * (i + 2)*(i + 3)D.第6行: i<=101 第8行: i * (i + 1) * (i + 2)
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1、求:1-1/2+1/3-1/4+...+1/99-1/100 下面()是正确的。A.sum=0; sign=1.0; for(i=1;i<=100;i++) { term =sign/ i; sum += term; sign=-sign; }B.sum=0; for(i=1;i<=100;i++) { sum =sum+(-1)^(i+1)* (1./i); }C.sum=0; for(i=1;i<=100;i++) { sum =sum+pow(-1,i+1)* (1.0/i); }D.sum=0; for(i=1;i<=100; i=-i) { term =1./ i; sum += term; i++; }
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下面程序的功能是计算1*2*3 + 3*4*5+…+ 99*100*101的值。按要求在空白处填写适当的表达式或语句,使程序完整并符合题目要求。 #include <stdio.h> int main() { long i ; long term, sum = 0; for (i=1;_______; i=i+2) { term = ______________; sum = sum + term; } printf("sum = %ldn", sum); return 0; }A.第6行: i≤99 第8行: i (i + 1) (i + 2)B.第6行: i<=99 第8行: i * (i + 1) * (i + 2)C.第6行: i<99 第8行: (i + 1) * (i + 2)*(i + 3)D.第6行: i<=101 第8行: i * (i + 1) * (i + 2)
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求:1-1/2+1/3-1/4+...+1/99-1/100 下面()是正确的。A.sum=0; sign=1.0; for(i=1;i<=100;i++) { term =sign/ i; sum += term; sign=-sign; }B.sum=0; for(i=1;i<=100;i++) { sum =sum+(-1)^(i+1)* (1./i); }C.sum=0; for(i=1;i<=100;i++) { sum =sum+pow(-1,i+1)* (1.0/i); }D.sum=0; for(i=1;i<=100; i=-i) { term =1./ i; sum += term; i++; }
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