求助exp2.c(23): error C141: syntax error near '=='

ID:786120 · 發(fā)表于 2020-6-21 21:51

#include <REGX51.H>
#define uint unsigned int
#define uchar unsigned char
sbit Buzzer=P3^7;
sbit Led=P2^0;
void delay(int ms);

void delay(int ms)//延時(shí)函數(shù)
{
unsigned int i,j;
while(ms--)
{
for(i=0;i<ms;i++)
{
for(j=0;j<110;j++)
}
}
}
unsigned char key()
{
unsigned char count=0;
if(P1&0x0f)==0x0f)
{
delay(5);
if(P1^4==0) count=1;
}
else
{
count=0;
}
return count;
}

void main()
{
unsigned char mm;
while(1)
{

Led=0;//關(guān)掉led燈
Buzzer=0;
mm=key();
if(mm !=0)//確認(rèn)按鍵是否按下
{
Led=1;
delay(1000);
Led=0;
delay(1000);

}
if(mm!=0)//確認(rèn)按鍵是否按下
{
Buzzer=1;
delay(500);
Buzzer=0;
delay(500);
}
}
}
以上是代碼，紅色的是有錯(cuò)的地方
下面是錯(cuò)誤，實(shí)在不懂為啥會(huì)錯(cuò)
exp2.c(16): error C141: syntax error near '}'
exp2.c(22): error C141: syntax error near '=='
exp2.c(22): error C141: syntax error near ')'
exp2.c(30): error C141: syntax error near 'else'

ID:786141 · 發(fā)表于 2020-6-21 22:10

delay函數(shù)的第二個(gè)for缺少;。然后第二個(gè)錯(cuò)誤那里括號(hào)不匹配，

ID:298952 · 發(fā)表于 2020-6-22 09:02

if(P1&0x0f)==0x0f)
                     {
                              delay(5);
                              if(P1^4==0) count=1;
                     }
                     else
                     {
                              count=0;
                     }
                     return count;
if那里括號(hào)缺少個(gè)左側(cè)小括號(hào)，改為
if((P1&0x0f)==0x0f)
                     {
                              delay(5);
                              if(P1^4==0) count=1;
                     }
                     else
                     {
                              count=0;
                     }
                     return count;

ID:298952 · 發(fā)表于 2020-6-22 09:03

void delay(int ms)//延時(shí)函數(shù)
            {
                     unsigned int i,j;
                     while(ms--)
                     {
                              for(i=0;i<ms;i++)
                              {
                                    for(j=0;j<110;j++)
                              }
                     }
            }
這里改為
void delay(int ms)//延時(shí)函數(shù)
            {
                     unsigned int i,j;
                     while(ms--)
                     {
                              for(i=0;i<ms;i++)
                              {
                                    for(j=0;j<110;j++);
                              }
                     }
            }

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