编译此代码时出现错误。 Z
是为了使用最少数量的硬币而进行更改所需的最终硬币数量。我在顶部附近定义了int Z = 0
。我试过再次添加,并在打印语句中将类型更改为f
,但没有运气。CS50 PSET1贪婪 - 赋值错误和使用模(C)
这里的错误:
error: format specifies type 'int' but the argument has type '<dependent type>' [-Werror,-Wformat]
greedy.c:77:16: error: use of undeclared identifier 'z'
printf("%i\n", z);
这里是我的代码。我是初学者,所以任何建议或更正将受到欢迎。
#include <stdio.h>
#include <cs50.h>
#include <math.h>
int main(void)
{
//prompt user for amount of change owed
float f;
int num; //amount of change
do
{
printf("O hai! How much change is owed?:\n");
f = get_float();
}
while (f < 0); //verify input is positive
num = round(f * 100); //rounds float
//commence making change
do{
int c, e, i, j;
int z = 0; //z = coins
if (num % 25 == 0) // verifies that num is divisible by 25 so only 25c coins necessary
{
z = (num/25) + z; // updates final number of 25c coins
}
else if (num % 25 > 0)
{
i = num/25;
j = num % 25;
}
else if ((num/25 < 0) || (num >=10 && num < 25)) //this means that f is less than 25 cents so has to be divided by 10 cent coins
{
num = c;
c = j + c; //add remainder of num to the number to start with
}
if (c % 10 == 0) // c is less than 25c but divisible by 10c pieces
{
z = (c/10) + z; //d is the final number of 10c coins
}
else if (c /10 < 1) //this means it's less than 10c
{
c = e; // Then c must be less than 10c
}
else if (e % 5 == 0) // divisible by 5c pieces
{
z = (e/5) + z; // g is the number of 5 cent pieces
}
else if (e % 5 < 0)
{
z = (e/1) + z; //h is the number of pennies
}
}
while (num > 0); //num is rounded float
printf("%i\n", z);
}