c++代码实现创建一元多项式

创建一元多项式的C代码实现可以使用链表来表示多项式。每个节点包含两个成员，一个是存储系数的变量，一个是存储指数的变量。下面是一个简单的创建一元多项式的C代码示例：

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

// 定义多项式的节点结构
struct node {
    int coefficient;  // 系数
    int exponent;     // 指数
    struct node* next;  // 指向下一个节点的指针
};

// 创建多项式的函数
struct node* createPolynomial() {
    struct node* polynomial = NULL;  // 多项式的头节点
    struct node* current = NULL;    // 当前节点

    // 创建多项式的节点
    int coefficient, exponent;
    printf("请输入多项式的系数和指数（以-1 -1结束输入）：\n");
    while (1) {
        scanf("%d %d", &coefficient, &exponent);
        if (coefficient == -1 && exponent == -1) {
            break;
        }

        struct node* newNode = (struct node*)malloc(sizeof(struct node));
        newNode->coefficient = coefficient;
        newNode->exponent = exponent;
        newNode->next = NULL;

        if (current == NULL) {
            polynomial = newNode;
            current = newNode;
        } else {
            current->next = newNode;
            current = newNode;
        }
    }

    return polynomial;
}

// 打印多项式的函数
void printPolynomial(struct node* polynomial) {
    struct node* current = polynomial;

    printf("多项式的表达式为：");
    while (current != NULL) {
        printf("%dx^%d ", current->coefficient, current->exponent);
        current = current->next;
        if (current != NULL) {
            printf("+ ");
        }
    }

    printf("\n");
}

int main() {
    struct node* polynomial = createPolynomial();
    printPolynomial(polynomial);

    return 0;
}