我有一个错误,我找不到解决它的方法。我收到此错误
在0x504A3E6C(ucrtbased.dll)中抛出异常 ConsoleApplication3.exe:0xC0000005:访问冲突读取位置 0x0047617A。在第11行。
#include "Entities.h"
#include<assert.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
Expense* createExp(int nr_ap, float price, char* type) {
Expense *e = malloc(sizeof(Expense));
e->nr_ap = nr_ap;
e->price = price;
e->type = malloc(sizeof(char)*strlen(type) + 1); #Here is the problem.
strcpy(e->type, type);
return e;
}
void destroy(Expense *e) {
free(e->type);
free(e);
}
int getAp(Expense *e) {
return e->nr_ap;
}
float getPrice(Expense *e) {
return e->price;
}
char* getType(Expense *e) {
return e->type;
}
/*
Create a copy
*/
Expense *copyExp(Expense *e) {
return createExp(e->nr_ap, e->price, e->type);
}
void testCreateExp() {
Expense *e = createExp(10, 120, 'Gaz');
assert(getAp(e) == 10);
assert(getPrice(e) == 12);
assert(getType(e) == "Gaz");
destroy(e);
}
int main() {
testCreateExp();
}
答案 0 :(得分:6)
Expense *e = createExp(10, 120, 'Gaz');
没有任何意义。单引号用于单个字符,而不是C字符串。
e.g。 char initial = 'G'; char* name = "Gaz";
试试Expense *e = createExp(10, 120, "Gaz");
。大多数编译器应该警告您在这种情况下使用单引号是不正确的。
还怀疑你的断言不是正如预期的那样#34; assert(getType(e) == "Gaz");
- 不应该是strcmp()
?