[英]Program errors due to strcmp and strcpy in C
無論我如何編輯我的程序,似乎都存在溢出錯誤和不匹配的類型錯誤。 有人可以幫我做這個沒有錯誤的運行。
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main() {
int choice;
int i;
int j;
char type;
int amount;
int don_count = 0;
int req_count = 0;
int flag;
char donations_inv_type[100][20];
int donations_amount[100];
char requests_inv_type[100][20];
int req_amount[100];
printf("Welcome to the Food Bank Program\n\n 1. Add a donation\n 2. Add a request\n 3. Fulfill a request\n 4. Print status report\n 5. Exit\n\nEnter your choice: ");
scanf("%d", &choice);
while (choice != 5) {
if (choice == 1) {
printf("\nEnter inventory type: ");
scanf("%s", &type);
printf("Enter the amount: ");
scanf("%d", &amount);
printf("\nDonation Added!\n\n");
flag = -99;
for (i = 0; i < don_count; i++) {
if (strcmp(donations_inv_type[i], type) == 0)
flag = i;
}
if (flag == -99) {
strcpy(donations_inv_type[i], type);
donations_amount[i] = amount;
don_count++;
}
else
donations_amount[flag] += amount;
printf("Donation Added!\n");
printf("Press any key to continue . . .\n\n");
}
else if (choice == 2) {
printf("\nEnter inventory type: ");
scanf("%s", &type);
printf("Enter the amount: ");
scanf("%d", &amount);
strcpy(requests_inv_type[req_count], type);
req_amount[req_count] = amount;
req_count++;
}
else if (choice == 3) {
printf("\n\n-------- Fulfilling Requests--------");
flag = -99;
for (i = 0; i < don_count; i++) {
if (strcmp(donations_inv_type[i], requests_inv_type[0]) == 0)
flag = i;
}
if (flag == -99)
printf("Cannot be Fulfilled\n\n");
else if (donations_amount[flag] > req_amount[0]) {
donations_amount[flag] -= req_amount[0];
printf("Request Fulfilled");
req_amount[0] = 0;
}
else if (donations_amount[flag] == req_amount[0]) {
printf("Request Fulfilled");
for (i = flag; i < don_count; i++) {
strcpy(donations_inv_type[i], donations_inv_type[i + 1]);
strcpy(donations_amount[i], donations_amount[i + 1]);
}
don_count--;
for (i = flag; i < req_count; i++) {
strcpy(requests_inv_type[i], requests_inv_type[i + 1]);
strcpy(req_amount[i], req_amount[i + 1]);
}
req_count--;
}
else if (donations_amount[flag] < req_amount[0]) {
printf("Partially Fulfilled");
req_amount[0] -= donations_amount[flag];
for (i = flag; i < don_count; i++) {
strcpy(donations_inv_type[i], donations_inv_type[i + 1]);
strcpy(donations_amount[i], donations_amount[i + 1]);
don_count--;
}
}
}
else if (choice == 4) {
printf("Printing the Donations Table\n\n");
for (i = 0; i < don_count; i++) {
printf("%s %d", donations_inv_type[i], donations_amount[i]);
}
printf("Printing the Requests Table\n\n");
for (i = 0; i < req_count; i++) {
printf("%s %d", requests_inv_type[i], req_amount[i]);
}
}
printf("Welcome to the Food Bank Program\n\n 1. Add a donation\n 2. Add a request\n 3. Fulfill a request\n 4. Print status report\n 5. Exit\n\nEnter your choice: ");
}
}
非常感謝任何幫助,我希望能解釋我做錯了什么,以便我可以學習,而不是下次犯同樣的錯誤。
而不是char type
你需要char type[100]
代碼出錯:
if (strcmp(donations_inv_type[i], type) == 0)
// ^^^^ should be char*
注意:函數strcmp()
和strcpy()
應該傳遞\\0
以n結尾的char數組(或者說字符串)。
你的scanf應該看起來像scanf("%s", type);
將type
聲明為character array
。
char type[50];
刪除&
在scanf()
。 閱讀字符串時不應使用&
。
scanf("%s", &type); ==> scanf("%s", type);
^
在這里,您要復制整數而不是字符串
strcpy(donations_amount[i], donations_amount[i + 1]);
strcpy(req_amount[i], req_amount[i + 1]);
像這樣修改
donations_amount[i]=donations_amount[i + 1];
req_amount[i]= req_amount[i + 1];
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.