#include
#include
typedef struct people{
        char name[100];
        char phonenumber[100];
}contents;

void face(void)
{
        printf("nn***** Menu *****n");
        printf("1. Insert  n2. Delete  n3. Search  n4. Print All  n5. Exitnnn");
}

int scan(void)
{
        int a;
        scanf("%d", &a);
        return a;
}

void clear(void)
{
        while (getchar() != 'n');
}
/* 전화번호부 프로그램 작성
1. 입력 2. 삭제 3. 해당이름 출력 4. 전체출력

일단 이것부터*/

int main()
{
        int a;
        face();
        int b = 1, d = 0;;
        char c[100];
        contents * ptr1 = (contents *)malloc(sizeof(contents)*b );
        while (1)
        {
                printf("menu select : ");
                a = scan();//메뉴얼 번호 받자
                
                if (a == 1)
                {
                        ptr1 = (contents*)realloc(ptr1, sizeof(contents)*b);
                        printf("input name : ");
                        scanf("%s", ptr1[b - 1].name);
                        clear();
                        printf("input phonenumber : ");
                        scanf("%s", ptr1[b - 1].phonenumber);
                        b++;
                        
                }
                if (a == 2) // 이름 삭제 문자열 비교 동적할당 해제
                {
                        printf("input name :");
                        scanf("%s", c);
                        d = 0;
                        while (d < b)
                        {
                                if (!strcmp(c, ptr1[d].name))
                                {
                                        free(ptr1[d].name);
                                        free(ptr1[d].phonenumber);

                                }
                                d++;
                        }
                }
                
                if (a == 3)
                {
                        printf("Input name :");
                        scanf("%s", c);
                        d = 0;
                        while (d < b){
                                if (!strcmp(c, ptr1[d].name))
                                {
                                        printf("%sn", ptr1[d].name);
                                        printf("%s", ptr1[d].phonenumber);

                                }
                                d++;
                        }
                        
                }
                
        }
}
여기서 메뉴 2번 딜리트 선택하고
이름 쓰고 그 이름 맞는 문자열 비교해서 맞는 문자열 찾아내면
동적할당 해제 시키려고 하는데 자꾸 오류가 납니다..
도와주세요 ㅜ