C 如何通过if循环指向数组
好的,所以我正试图写一个程序,在那里我投标的汽车。我想做的是,如果当前出价为零,那么最低出价就是起始出价。如果当前出价不为零,则最低出价为当前出价加上最低出价。当从类型“float”分配到类型“float[5]”时,我不断收到一个错误,该错误表示C 如何通过if循环指向数组,c,C,好的,所以我正试图写一个程序,在那里我投标的汽车。我想做的是,如果当前出价为零,那么最低出价就是起始出价。如果当前出价不为零,则最低出价为当前出价加上最低出价。当从类型“float”分配到类型“float[5]”时,我不断收到一个错误,该错误表示不兼容类型 这是我的密码: #include <stdio.h> #include <stdlib.h> #include <string.h> int menu1(); i
不兼容类型
这是我的密码:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int menu1();
int main()
{
FILE * ifp = fopen("input2.txt","r"); //Open the input file
int cars = 5, i , j, k; // Initialized cars and counters i, j, and k
char *VIEW="VIEW", *BID="BID", *CLOSE="CLOSE", choice1[20]; //Initialize character arrays
float CAR[5]={1,2,3,4,5},START_BID[5]={0.00}, MIN_BID[5]={0.00}, CUR_BID[5]={0.00}, USR_BID[5]={0.00}; //Initialized float arrays
int compareLimit = 100, selection=0;
//Scan the file and appropriate the numbers into their respective arrays
for (i = 0; i < cars; i++)
{
fscanf(ifp, "%f %f", &START_BID[i],&MIN_BID[i]);
}
printf("Welcome to the Silent Auction\n\n");
menu1(); //Display the menu
while (selection < 3)
{
scanf("%s", choice1);
int result = strncmp(choice1, VIEW, compareLimit); //Compare two strings
if(result == 0)
{
selection = 1;
}
int result2 = strncmp(choice1, BID, compareLimit); //Compare two strings
if(result2 == 0)
{
selection = 2;
}
int result3 = strncmp(choice1, CLOSE, compareLimit); //Compare two strings
if(result3 == 0)
{
selection = 3;
}
if (selection == 1)
{
printf("Number\tCurrent Bid\tMinimum Increase\n");
printf("1\t$%.2f\t\t$%.2f\n",CUR_BID[0], MIN_BID[0]);
printf("2\t$%.2f\t\t$%.2f\n",CUR_BID[1], MIN_BID[1]);
printf("3\t$%.2f\t\t$%.2f\n",CUR_BID[2], MIN_BID[2]);
printf("4\t$%.2f\t\t$%.2f\n",CUR_BID[3], MIN_BID[3]);
printf("5\t$%.2f\t\t$%.2f\n",CUR_BID[4], MIN_BID[4]);
menu1();
}
else if (selection == 2)
{
int k;
float usr_bid;
printf("Which auction would you like to bid on? (1-5)\n");
scanf("%d", &k);
if (CUR_BID[k-1] != 0.00)
MIN_BID = CUR_BID[k-1] + MIN_BID[k-1];
else
printf("The minimum bid is %.2f\n", MIN_BID[k - 1]);
printf("How much would you like to bid?\n");
scanf("%f", &usr_bid);
if (usr_bid < MIN_BID[k-1])
printf("Sorry, that bid is not high enough.\n");
else
CUR_BID[k-1] = usr_bid + CUR_BID[k-1];
menu1();
}
else
{
int i;
for (i=0; i<cars; i++)
if (CUR_BID!=0)
printf("Auction %d sold for $%f\n", CAR[i],CUR_BID[i]);
else
printf("Auction %d did not sell.\n");
break;
}
}
fclose(ifp);
return 0;
}
int menu1()
{
printf("Please make a selection (In all caps):\n");
printf("\tView Auctions [VIEW]\n");
printf("\tBid on an Auction [BID]\n");
printf("\tClose Auctions [CLOSE]\n");
}
有什么想法吗?MIN\u BID
有数组类型。你得选一个位置
MIN_BID[0] = ...
MIN\u BID
具有数组类型。你得选一个位置
MIN_BID[0] = ...
MIN\u BID
是一个浮点数组,但您试图只为其分配一个float
。看起来你想要的是minu-BID[k-1]=CUR-BID[k-1]+minu-BID[k-1]
minu BID
是一个浮点数数组,但您试图只为其分配一个浮点数。看起来你想要的是minu-BID[k-1]=CUR-BID[k-1]+minu-BID[k-1]代码>您不能分配给数组,更不用说将浮点分配给浮点数组了。要么让它成为一个浮点数,要么选择一个元素分配给它。“有什么想法吗?”——你是说除了非常明显的想法之外?我的意思是,见鬼,编译器甚至给你解释清楚了。你不能给数组赋值,更不用说给浮点数组赋值了。要么让它成为一个浮点数,要么选择一个元素分配给它。“有什么想法吗?”——你是说除了非常明显的想法之外?我的意思是,见鬼,编译器甚至给你拼出来了。