c - C程序运行时出现段错误

Question

我试过 malloc，但没有 malloc，它会构建但不会运行或编译。当我在 codepad.org 上运行代码时，出现段错误。我输入了一系列结构，我正在通过它们搜索特定项目。据我所知，没有编译。代码如下(我用的是netbeans、codeblocks、visual basic 2012程序):

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SIZE 20
#define BLOODTYPESIZE 4
#define MAX 120000

typedef struct {
    int month;
    int day;
    int year;
} dateT;

typedef struct {
    int hour;
    int minute;
} timeT;

typedef struct {
    char name[SIZE];
    char organname[SIZE];
    char bloodtype[BLOODTYPESIZE];
    dateT dateAdded;
    timeT timeAdded;
    int received;
} organT;

int main(void) {
    int i, n, k, j;
    int c;
    int *ptr;

    char organ[SIZE];
    char bloodkind[BLOODTYPESIZE];

    organT patient[MAX];

    scanf("%d",&n);
    ptr = (int *)malloc(n * sizeof(*ptr));
    printf("Enter patient information\n");
    for(i=1; i<=n; i++){
        scanf("%s", patient[i].name[SIZE]);
        scanf("%s", patient[i].organname[SIZE]);
        scanf("%s", patient[i].bloodtype[BLOODTYPESIZE]);
        scanf("%d %d %d", patient[i].dateAdded);
        scanf("%d %d", patient[i].timeAdded);
        patient[i].received = 0;
}
scanf("%d", &k);
for(j=0; j<k; j++) {
    gets(organ);
    printf("Organ received: %s", organ);
    gets(bloodkind);
    printf("Organ has blood type: %s", bloodkind);
}
for (c=0; c<n; c++){
    if(patient[i].organname == organ){
        if(patient[i].bloodtype == bloodkind){
            if(patient[i].received == 0) {
                printf("Patient(s) Found!\n");
                printf("%s", patient[i].name[SIZE]);
                printf("Organ received: %s", organ);
                patient[i].received = 1;
            }
            if(patient[i].received == 1)
                printf("Patient already received organ\n");
        }
        else("Not correct blood type\n");
    }
    else("No match found\n");
}

return (EXIT_SUCCESS);
}

Answer 1

您似乎没有正确使用地址。例如，当你说

scanf("%s", &patient[i].name[SIZE]);

您实际上正在阅读为 patient[i].name 分配的空间。您应该将语句更改为

scanf("%s",patient[i].name);

并以类似的方式修复其他语句。