Sum and Multiplication Of Polinoms

#include<stdio.h>
#define MAX_DEGREE 10

int readpoly(int poly[]){
    int i,degree;
    scanf("%d",&degree);
    for(i=degree;i>=0;i--){
        scanf("%d",&poly[i]);
    }
    return degree;
}

void printpoly(int poly[],int degree){
    int i;
    for(i=degree;i>=0;i--){
        printf("%dx^%d ",poly[i],i);
    }
    printf("\n");
}

int addpolynoms(int p1[],int degree1,int p2[],int degree2,int sum[]){
    int i,sumdegree;
    if(degree1>degree2){
        sumdegree=degree1;
    }
    else{
        sumdegree=degree2;
    }
    for(i=0;i<=sumdegree;i++){
        sum[i]=p1[i]+p2[i];
    }
    return sumdegree;
}

int multpolynoms(int p1[],int degree1,int p2[],int degree2,int mult[]){
    int i,multdegree,j;
    multdegree=degree1+degree2;
    for(i=0;i<=degree1;i++){
        for(j=0;j<=degree2;j++){
            mult[i+j]+=p1[i]*p2[j];
        }
    }
    return multdegree;
}

int main(){
    int p1[MAX_DEGREE+1]={0},p2[MAX_DEGREE+1]={0},sum[MAX_DEGREE+1]={0},mult[2*MAX_DEGREE+1]={0};
    int degree1,degree2,sumdegree,multdegree,i,j;
    degree1=readpoly(p1);
    degree2=readpoly(p2);

    printpoly(p1,degree1);
    printpoly(p2,degree2);

    sumdegree=addpolynoms(p1,degree1,p2,degree2,sum);
    printpoly(sum,sumdegree);

    multdegree=multpolynoms(p1,degree1,p2,degree2,mult);
    printpoly(mult,multdegree);


    anykey();
    return 0;
}