c - 不确定我的编译错误 : control reaches end of non-void function

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已关闭。这个问题是 not reproducible or was caused by typos 。目前不接受答案。

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这个问题是由拼写错误或无法再重现的问题引起的。虽然类似的问题可能是 on-topic在这里，这个问题的解决方式不太可能帮助 future 的读者。

已关闭 6 年前。

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当我尝试将代码提交给我的教授时，我收到一条编译错误，并显示以下消息:

ipc_ms1.c: In function ‘getDbl’:
ipc_ms1.c:146:1: warning: control reaches end of non-void function [-Wreturn-type]
ipc_ms1.c: In function ‘getInt’:
ipc_ms1.c:122:1: warning: control reaches end of non-void function [-Wreturn-type]

我不知道该怎么办

#include <stdio.h>

void welcome(void);
int getInt(void);
double getDbl(void);
void prnTitle(void);
void prnFooter(double gTotal);
void pause(void);
double getDblLimited(double lowerLimit, double upperLimit);

void welcome(void)
{
printf("---=== Grocery Inventory System ===---\n");

}

void prnTitle(void)
{
printf("Row |SKU| Name \t | Price |Taxed| Qty | Min |  Total  |Atn \n");
printf("----+---+--------------------+--------+-----+-----+-----+------------+|---\n");

}
void prnFooter(double gTotal)
{
printf("--------------------------------------------------------+-----------  ------\n");
//float  gTotal = 1234.57;
while (gTotal > 0)
{
    printf("%12.21f", gTotal);
}
}
void clrKyb(void)
{
char b;
while (b != '\n')
{
    scanf("%c", &b);
}

}
 void pause(void)
{
printf("Press <Enter> to continue...");

clrKyb();

}
int getInt(void)
{
printf("Enter an interger:");
int d;
char c;
scanf("%d%c", &d, &c);
while (c != '\n')
{
    printf("Invalid integer, please try again ");
    scanf("%d%c", &d, &c);
}
}
int getIntLimited(int lowerLimit, int upperLimit)
{
int a;
printf("Enter an integer between %d and %d:", lowerLimit, upperLimit);
scanf("%d", &a);
while (a <= lowerLimit || a >= upperLimit)
{
    printf("Invalid value, %d < value < %d:", lowerLimit, upperLimit);
    scanf("%d", &a);
}
return a;
}
double getDbl(void)
{
double d;
char c;
printf("Enter a floating point number:");
scanf("%lf,%c", &d, &c);
while (c != '\n')
{
    printf("Invalid number, please try again ");
    scanf("%lf%c", &d, &c);
}

}

double getDblLimited(double lowerLimit, double upperLimit)
{
double a;
printf("Enter a floating point number between %f and %f:", lowerLimit,   upperLimit);
scanf("%lf", &a);
while (a <= lowerLimit || a >= upperLimit)
{
    printf("Invalid value, %f < value < %f:", lowerLimit, upperLimit);
    scanf("%lf", &a);
}
return a;
return 0;
}

Answer 1

您忘记从 getDbl 中返回任何内容。