线性差值算法
点斜式:
#include<stdio.h>#define N 10float w = 10.0;float w0 = 0.0;float wn = 100.0;int adc[N+1] = {86,376,687,1021,1379,1760,2164,2592,3043,3515,4008};float line(int x){ int i; if(x<adc[0]) return(w0); if(x>=adc[N]) return(wn); for(i=0;i<N;i++) if(x<adc[i+1]) break; return (w*i + (w*(x-adc[i])/(adc[i+1]-adc[i])));}main(){ int x; float y; while(1){ printf("\n输入A/D转换结果"); scanf("%d",&x); if(x==0) break; y = line(x); printf("\n对应温度为:%2.2f度",y); }}
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