在C语言中，结构体数组的赋值可以通过以下几种方法：

1. 逐个元素赋值：

```c

include

typedef struct { int a; float b; } Student;

int main() { Student students[3] = { {1, 90.5}, {2, 85.0}, {3, 92.0} };

for (int i = 0; i < 3; i++) {
    printf("学生 %d: a = %d, b = %.1f\n", i + 1, students[i].a, students[i].b);
}

return 0;

} ```

1. 使用memset函数：

```c

include

include

typedef struct { int a; float b; } Student;

int main() { Student students[3]; memset(students, 0, sizeof(students));

students[0].a = 1;
students[0].b = 90.5;
students[1].a = 2;
students[1].b = 85.0;
students[2].a = 3;
students[2].b = 92.0;

for (int i = 0; i < 3; i++) {
    printf("学生 %d: a = %d, b = %.1f\n", i + 1, students[i].a, students[i].b);
}

return 0;

} ```

1. 使用循环逐个元素赋值：

```c

include

typedef struct { int a; float b; } Student;

int main() { Student students[3];

students[0].a = 1;
students[0].b = 90.5;
students[1].a = 2;
students[1].b = 85.0;
students[2].a = 3;
students[2].b = 92.0;

for (int i = 0; i < 3; i++) {
    printf("学生 %d: a = %d, b = %.1f\n", i + 1, students[i].a, students[i].b);
}

return 0;

} ```

以上三种方法都可以实现结构体数组的赋值。