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baobiao007

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#include

//»¥Ïà¹Ø
void corre(float x[],int m,float y[],int n,float z[],int l)
{
        int i,j,k;
        for(i=0; i         {
                z=0.0;
                k=i-(n-1);
                for(j=0; j                         if(j-k>=0&&j-k                                 z+=x[j]*y[j-k];
        }
}

void main()
{
        //m,n,a1,a2,b1,b2,x[],y[]¿É×ÔÐÐÐÞ¸Ä
        const int m=3;//length of x(n)
        const int n=3;//length of y(n)
        const int l=m+n-1;//length of r(n)
        const int a1=-1;//left border of x(n)
        const int a2=1;//right border of x(n)
        const int b1=0;//left border of y(n)
        const int b2=2;//right border of y(n)
        float x[m]={1,1,1};//x(n)={x(-1),x(0),x(1)}
        float y[n]={1,2,3};//y(n)={y(0),y(1),y(2)}
        float r[l];
        int c1, c2, i;
        c1=a1-b2;//left border of r(n)
        c2=a2-b1;//right border of r(n)

        corre(x,m,y,n,r,l);
        printf("result:\n";
        for(i=0; i                 printf("r(%d)=%f\n",c1+i,r);
}
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mujiaxuepai

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Geophoenix

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