用c语言编写一个程序，采用顺序表存储一元多项式，并实现两个多项式相加运算，要求： （1）创建存储多项式的有序表（按无序输入）ha和hb； （2）求ha和hb相加产生多项式hc。 （3）输出多项式ha、hb和hc；

下面是一个简单的C语言程序，用于创建顺序表存储一元多项式并实现两个多项式的相加操作：

#include <stdio.h>
#include <stdlib.h>

// 定义多项式的结构体
typedef struct {
    int degree;
    double* coefficients; // 存储多项式的系数
} Polynomial;

// 动态分配空间并初始化多项式
Polynomial* create_polynomial(int degree) {
    Polynomial* poly = (Polynomial*)malloc(sizeof(Polynomial));
    poly->degree = degree;
    poly->coefficients = malloc(degree * sizeof(double));
    for (int i = 0; i <= degree; ++i) {
        poly->coefficients[i] = 0;
    }
    return poly;
}

// 输入多项式系数
void input_polynomial(Polynomial* poly, const char* name) {
    printf("Enter the %s polynomial coefficients (separated by space): ", name);
    int deg;
    scanf("%d", &deg);
    poly->degree = deg;
    
    for (int i = 0; i <= deg; ++i) {
        scanf("%lf", &poly->coefficients[i]);
    }
}

// 两个多项式相加
Polynomial* add_polynomials(Polynomial* ha, Polynomial* hb) {
    Polynomial* hc = create_polynomial(ha->degree + hb->degree);
    
    for (int i = 0; i <= ha->degree; ++i) {
        hc->coefficients[i] += ha->coefficients[i];
    }
    for (int i = 0; i <= hb->degree; ++i) {
        if (i <= ha->degree) { // 避免重复添加同一次幂
            continue;
        }
        hc->coefficients[i] += hb->coefficients[i];
    }
    
    return hc;
}

// 输出多项式
void print_polynomial(const Polynomial* poly) {
    printf("The %s polynomial is:\n", "HC"); // 使用HC代替实际的多项式名称
    for (int i = 0; i <= poly->degree; ++i) {
        printf("%dx^%d + ", poly->coefficients[i], i);
    }
    printf("\n");
}

int main() {
    Polynomial* ha = create_polynomial(0);
    Polynomial* hb = create_polynomial(0);

    input_polynomial(ha, "ha");
    input_polynomial(hb, "hb");

    Polynomial* hc = add_polynomials(ha, hb);
    print_polynomial(ha); // 输出ha
    print_polynomial(hb); // 输出hb
    print_polynomial(hc); // 输出hc

    free(ha->coefficients);
    free(ha);
    free(hb->coefficients);
    free(hb);
    return 0;
}

这个程序首先定义了多项式结构，然后实现了创建、输入、相加和输出多项式的功能。注意，输入的部分需要用户手动输入系数，可以根据需求修改为读取文件或其他方式。