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[Other] C语言书 p129 6.8题有一分数列 DL : 0: 求一分数列的和 #include<stdio.h> #include <math.h> void main() { float e=0; int a,b,i=0; a=2;b=1; while(i<20) { e=e+a/b; a=a+b; b=a-b; i++; } printf("前20项之和为%f\n",e); }
Date : 2013-12-02 Size : 188byte User : xiaoyidexiaoxin