/* Driver for routine gcf */#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 a,val,x,gammcf,gln;	FILE *fp;	if ((fp = fopen("fncval.dat","r")) == NULL)		nrerror("Data file fncval.dat not found\n");	fgets(txt,MAXSTR,fp);	while (strncmp(txt,"Incomplete Gamma Function",25)) {		fgets(txt,MAXSTR,fp);		if (feof(fp)) nrerror("Data not found in fncval.dat\n");	}	fscanf(fp,"%d %*s",&nval);	printf("\n%s\n",txt);	printf("%4s %11s %14s %13s %13s %8s\n","a","x",		"actual","gcf(a,x)","gammln(a)","gln");	for (i=1;i<=nval;i++) {		fscanf(fp,"%f %f %f",&a,&x,&val);		if (x >= (a+1.0)) {			gcf(&gammcf,a,x,&gln);			printf("%6.2f%13.6f%13.6f%13.6f%12.6f%13.6f\n",				a,x,(1.0-val),gammcf,gammln(a),gln);		}	}	fclose(fp);	return 0;}#undef NRANSI