ann.rar_bp ann

#include "stdio.h" #include "conio.h" #define N 4 //float P[2][N] = {2, 1, -2, -1, // 2, -2, 2, 0}; //float T[1][N] = {0, 1, 0, 1}; float P[2][N] = {0, 1, 0, 1, 0, 0, 1, 1}; float T[1][N] = {0, 0, 0, 1}; float E[1][1] = {0}; float W[1][2] = {0, 0}; float B[1][1] = {0}; float A[1][1] = {0}; float sign(float); void GetA(int, int); void GetW(int); void GetB(); int ABS(float); int main(void) { int i; i = N; int j; j = 0; int k; k = 0; while(i) { printf("********************\n"); GetA(j,k); printf("a = :\n%.4f\n", A[0][0]); E[0][0] = T[0][j] - A[0][0]; printf("e = :\n%.4f\n", E[0][0]); GetW(j); printf("w = :\n%.4f %.4f\n", W[0][0], W[0][1]); GetB(); printf("b = :\n%.4f\n", B[0][0]); j++; if(j >= N) { j = 0; } k = j; if((ABS(E[0][0]) == 0)) i --; else i = N; } printf("\nxunlian over! \n"); printf("Y start ceishi!\n"); while(getch() == 'y') { printf("\nenter ceshi: (1 3)\n"); float _a, _b; scanf("%f%f",&_a,&_b); printf("\njie guo is :%.4f\n",sign(_a*W[0][0]+_b*W[0][1]+B[0][0])); printf("Y continue!\n"); } return 0; } float sign(float a) { if(a >= 0) return 1; else return 0; } void GetA(int j,int k) { int _i; _i = 2; float sum; sum = 0; for(_i = 0; _i<2; _i++) { sum += W[0][_i]*P[_i][k]; } sum += B[0][0]; A[0][0] = sign(sum); } void GetW(int j) { int _i; for(_i = 0; _i<2; _i++) { W[0][_i] += E[0][0]*P[_i][j]; } } void GetB() { B[0][0] += E[0][0]; } int ABS(float a) { #define _E 0.00001 if((a < _E)&&(a >- _E)) return 0; else return 1; }