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;

在C语言中，我们可以使用结构体来表示多项式的系数和次数，然后通过顺序表（数组）来存储多项式。以下是一个简单的实现示例：

#include <stdio.h>

// 定义多项式的项结构
typedef struct {
    int coefficient; // 系数
    int exponent;     // 次数
} PolynomialTerm;

// 定义多项式类型的指针
typedef PolynomialTerm* Polynomial;

// 功能：添加两个多项式的项
void add_terms(Polynomial ha, Polynomial hb, Polynomial hc) {
    for (int i = 0; i < 10 && ha[i].exponent != -1; i++) { // 假设每个多项式最多有10项
        PolynomialTerm term_ha = ha[i];
        PolynomialTerm term_hb = (hb + i < 10) ? hb[i] : {0, -1}; // 如果hb不存在这个位置，则默认系数为0

        if (term_ha.exponent == term_hb.exponent) {
            hc[i].coefficient += term_ha.coefficient + term_hb.coefficient;
        } else if (term_ha.exponent > term_hb.exponent) {
            hc[i].coefficient += term_ha.coefficient;
            if (i < 9) {
                hc[i+1].coefficient += term_hb.coefficient;
            }
        } else {
            if (i < 9) {
                hc[i].coefficient += term_hb.coefficient;
            }
        }
    }

    // 清除多余的0项
    while (hc-1) {
        hc++;
    }
}

// 主函数
int main() {
    Polynomial ha = (Polynomial)malloc(sizeof(PolynomialTerm) * 10);
    Polynomial hb = (Polynomial)malloc(sizeof(PolynomialTerm) * 10);
    Polynomial hc = (Polynomial)malloc(sizeof(PolynomialTerm) * 10);

    // 输入多项式ha
    printf("Enter coefficients and exponents of polynomial ha (separated by space): ");
    for (int i = 0; i < 10; i++) {
        scanf("%d %d", &ha[i].coefficient, &ha[i].exponent);
        if (ha[i].exponent == -1) break; // 表示输入结束
    }

    // 输入多项式hb
    printf("\nEnter coefficients and exponents of polynomial hb (separated by space): ");
    for (int i = 0; i < 10; i++) {
        scanf("%d %d", &hb[i].coefficient, &hb[i].exponent);
        if (hb[i].exponent == -1) break;
    }

    // 相加
    add_terms(ha, hb, hc);

    // 输出结果
    printf("Polynomial ha: ");
    for (int i = 0; i < 10; i++) {
        if (hc[i].exponent != -1) {
            printf("%dx^%d ", hc[i].coefficient, hc[i].exponent);
        }
    }
    printf("\n");

    printf("Polynomial hb: ");
    for (int i = 0; i < 10; i++) {
        if (hb[i].exponent != -1) {
            printf("%dx^%d ", hb[i].coefficient, hb[i].exponent);
        }
    }
    printf("\n");

    printf("Sum (polynomial hc): ");
    for (int i = 0; i < 10; i++) {
        if (hc[i].exponent != -1) {
            printf("%dx^%d ", hc[i].coefficient, hc[i].exponent);
        }
    }
    printf("\n");

    free(ha);
    free(hb);
    free(hc);

    return 0;
}

在这个程序中，我们首先创建了三个多项式变量`ha`、`hb`和`hc`，然后通过用户输入读取系数和指数，接着计算它们的和并存储在`hc`中。最后，输出三个多项式的内容。