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输入为描述多项式的字符串，使用自动机将其解析为结构化的数据输入示例：2 x^2 2x x 2x^2代码：#include <cstdlib> #include <ctype.h> #include <stdio.h> #include <sstream> #include <vector> // 项 struct term { ...
数据:data.txt3 57.6 6 41.9 9 31.0 12 22.7 15 16.6 18 12.2 21 8.9 24 6.5代码:void a() { TCanvas *c = new TCanvas("c1", "Data Analysis", 500, 500); TGraph* gr = new TGraph(&qu...