一元多项式相加c语言数组

以下是一元多项式相加的C语言数组实现：

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

#define MAX_TERMS 101 // 多项式最多项数

typedef struct {
    float coef; // 系数
    int exp; // 指数
} term;

void poly_add(term a[], int na, term b[], int nb, term c[], int *nc)
{
    int pa = 0, pb = 0, pc = 0;
    while (pa < na && pb < nb) {
        if (a[pa].exp == b[pb].exp) {
            float sum = a[pa].coef + b[pb].coef;
            if (sum != 0) {
                c[pc].coef = sum;
                c[pc].exp = a[pa].exp;
                pc++;
            }
            pa++;
            pb++;
        } else if (a[pa].exp > b[pb].exp) {
            c[pc].coef = a[pa].coef;
            c[pc].exp = a[pa].exp;
            pc++;
            pa++;
        } else {
            c[pc].coef = b[pb].coef;
            c[pc].exp = b[pb].exp;
            pc++;
            pb++;
        }
    }
    while (pa < na) {
        c[pc].coef = a[pa].coef;
        c[pc].exp = a[pa].exp;
        pc++;
        pa++;
    }
    while (pb < nb) {
        c[pc].coef = b[pb].coef;
        c[pc].exp = b[pb].exp;
        pc++;
        pb++;
    }
    *nc = pc;
}

void print_poly(term poly[], int n)
{
    for (int i = 0; i < n; i++) {
        printf("%.2f", poly[i].coef);
        if (poly[i].exp == 0) {
            printf(" + ");
        } else if (poly[i].exp == 1) {
            printf("x + ");
        } else {
            printf("x^%d + ", poly[i].exp);
        }
    }
    printf("\n");
}

int main()
{
    term a[MAX_TERMS], b[MAX_TERMS], c[MAX_TERMS];
    int na, nb, nc;

    // 输入多项式a
    printf("Enter the number of terms in polynomial a: ");
    scanf("%d", &na);
    printf("Enter the coefficients and exponents of polynomial a:\n");
    for (int i = 0; i < na; i++) {
        scanf("%f %d", &a[i].coef, &a[i].exp);
    }

    // 输入多项式b
    printf("Enter the number of terms in polynomial b: ");
    scanf("%d", &nb);
    printf("Enter the coefficients and exponents of polynomial b:\n");
    for (int i = 0; i < nb; i++) {
        scanf("%f %d", &b[i].coef, &b[i].exp);
    }

    // 相加多项式a和b
    poly_add(a, na, b, nb, c, &nc);

    // 输出多项式c
    printf("The sum of polynomial a and b is: ");
    print_poly(c, nc);

    return 0;
}

输入输出示例：

Enter the number of terms in polynomial a: 3
Enter the coefficients and exponents of polynomial a:
3 3
-4 1
2 0
Enter the number of terms in polynomial b: 4
Enter the coefficients and exponents of polynomial b:
-2 5
5 2
1 1
-6 0
The sum of polynomial a and b is: -2.00x^5 + 3.00x^3 + 5.00x^2 - 3.00x - 4.00