?? xerfcc.c
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/* Driver for routine erfcc */#include <stdio.h>#include <stdlib.h>#include <string.h>#define NRANSI#include "nr.h"#include "nrutil.h"#define MAXSTR 80int main(void){ char txt[MAXSTR]; int i,nval; float x,val; FILE *fp; if ((fp = fopen("fncval.dat","r")) == NULL) nrerror("Data file fncval.dat not found\n"); fgets(txt,MAXSTR,fp); while (strncmp(txt,"Error Function",14)) { fgets(txt,MAXSTR,fp); if (feof(fp)) nrerror("Data not found in fncval.dat\n"); } fscanf(fp,"%d %*s",&nval); printf("\ncomplementary error function\n"); printf("%5s %12s %13s\n","x","actual","erfcc(x)"); for (i=1;i<=nval;i++) { fscanf(fp,"%f %f",&x,&val); val=1.0-val; printf("%6.2f %12.7f %12.7f\n",x,val,erfcc(x)); } fclose(fp); return 0;}#undef NRANSI?? 快捷鍵說明
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