Question

我今天对我的节目表示普遍关注。我已经花了很多时间（我可以用来学习决赛的时间）在这个项目上，我觉得我需要退一步。当我尝试运行它时，程序会告诉我这些错误。

lines 115, 120, 131, 136, 146:
  warning: passing argument 1 of 'strcmp' makes pointer from integer without a cast
  note: expected 'const char *' but argument is of type 'int'

（请注意，这是一项正在进行中的工作，并不是真正意义上的功能，但如果你看到其他任何内容，请告诉我们）

我班上有一位非常有趣的教授，他以同样有趣的方式教学，所以我在尝试理解这些课程要求的某些方面时遇到了麻烦。非常感谢您提供的任何帮助。提前致谢

#include<stdio.h>
#include<string.h>
#include<stdlib.h>

#define MAX_ITEMS 1000


struct drink {
int drinkNum;
double drinkPrice;
}drinklist[10];

struct items {
double itemPrice;
};

struct raffle {
double rafValue;
};

int main(){
double preTickets, doorTickets, minBid;
int preSold, numItems, rafTickets = 0, rafPrizes, rafCost;

int i, numEvents, x;

FILE* fin;
fin = fopen("input.txt", "r");

// Line#1 from input file
fscanf(fin, "%lf %lf %d", &preTickets, &doorTickets, &preSold);

// Line#2 from input file
fscanf(fin, "%d %lf", &numItems, &minBid);

// This allocates space for the list of auction items dynamically. 

struct items* itemList = (struct items*)malloc(sizeof(struct items)*numItems);

// Line#3 from input file.
for(i = 0; i < numItems; i++){
    fscanf(fin, "%lf", &itemList[i].itemPrice);
}

// Line#4 fron input file.
fscanf(fin, "%d %d %d", &rafTickets, &rafCost, &rafPrizes);

// Same as the itemList. Creates enough space for the number of raffle prizes you need.
struct raffle* raffleList = (struct raffle*)malloc(sizeof(struct raffle)*rafPrizes);


// Line#5 from input file
for(i = 0; i < rafPrizes; i++){
    fscanf(fin, "%lf", &raffleList[i].rafValue);
}

struct drink drinklist[10];

// Line#6 from input file
for(i = 0; i < 10; i++){
    fscanf(fin, "%d", &drinklist[i].drinkNum);
}

 // Line#7 from input file
for(i = 0; i < 10; i++){
    fscanf(fin, "%lf", &drinklist[i].drinkPrice);
}

// This just prints out the output that has been read in so far.
// This will also show you how you can refer to the different members of data that you need later.
printf("%.2lf %.2lf %d\n", preTickets, doorTickets, preSold);
printf("%d %.2lf\n", numItems, minBid);

for(i = 0; i < numItems; i++){
    printf("%.2lf ", itemList[i].itemPrice);
}

printf("\n%d %d %d\n", rafTickets, rafCost, rafPrizes);

for(i = 0; i < rafPrizes; i++){
    printf("%.2lf ", raffleList[i].rafValue);
}

printf("\n");
for(i = 0; i < 10; i++){
    printf("%d ", drinklist[i].drinkNum);
}
printf("\n");
for(i = 0; i < 10; i++){
    printf("%.2lf ", drinklist[i].drinkPrice);
}
printf("\n");

// This frees the memory that you allocated dynamically.
free(itemList);
free(raffleList);


// loop that runs from from 0 to < numCommands and read in each command and evaluate it.

fscanf(fin, "%d", &numEvents);
fclose(fin);

int actLoop, boughtTickets, boughtRaffle, boughtDrink;
int itemPrice, currentBid, guestBid, bidOffer;
int guestRaf;
int drinkWanted;

for (actLoop=0; actLoop<numEvents; actLoop++); {

int action;

fscanf(fin, "%s", action);

if (strcmp(action, "BUY TICKET") == 0) {
    fscanf(fin, "%d", boughtTickets);
    printf("Sold tickets %d - %d", &preSold+1, &preSold+boughtTickets);
}

else if (strcmp(action, "BIDITEM") == 0) {
    fscanf(fin, "%d%d%.2lf", &itemList[i], &guestBid, &bidOffer);

    if (bidOffer < itemList[i].itemPrice + minBid) {
        printf("Bid for item %d rejected for person %d at %.2lf", &itemList[i], &guestBid, &bidOffer);
    }
    else
        printf("Bid for item %d accepted for person %d at %.2lf", &itemList[i], &guestBid, &bidOffer);
        itemList[i].itemPrice == bidOffer;
}

else if (strcmp(action, "CLOSEAUCTION") == 0) {

}


else if (strcmp(action, "BUY RAFFLE") == 0) {
    fscanf(fin, "%d%d", &boughtRaffle, &guestRaf);
    if (boughtRaffle > rafTickets) {
        boughtRaffle == rafTickets;
        rafTickets = rafTickets - boughtRaffle;
    }
        printf("Raffle Tickets %d - %d given to person %d", &rafTickets, &rafTickets+boughtRaffle, &guestBid);

}

else if (strcmp(action, "BUY DRINK") == 0) {
    fscanf(fin, "%d%d", &drinkWanted, &drinklist[i].drinkNum);
    if (drinklist[i].drinkNum < drinkWanted) {
        drinkWanted = drinklist[i].drinkNum - drinkWanted;
    }
    printf("Sold %d of drink %d", &drinklist[i].drinkNum, &drinkWanted);
        drinklist[i].drinkNum = drinklist[i].drinkNum - drinkWanted;

}
}
}

Answer 1

您正在将字符串读入int，您应该使用char数组：

char action[200];
fscanf(fin, "%199s", action);

此处您需要boughtTickets

的地址

fscanf(fin, "%d", &boughtTickets);

在这里打印变量的地址而不是它们的值：

printf("Sold tickets %d - %d", &preSold+1, &preSold+boughtTickets);

你明白了，请阅读一本好的C书，我推荐K＆amp; R.

Answer 2

strmp将字符串与另一个字符串进行比较，但对于您的程序，您要将int（action）与字符串进行比较。

同样，fscanf(fin, "%s", action); fscanf正在从文件输入描述符fin读取字符串，因此action的类型应为char缓冲区

char action[256];

fscanf(fin, "%s", action);

if (strcmp(action, "BUY TICKET") == 0) {

传递'strcmp'错误/期望'const'char *'的参数1，但参数类型为'int'

2 个答案: