解决底层管理功能中的UD的建议
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我是C语言的新手，并开始编写一个小型库，该库具有以下功能：获取字符串长度，反转字符串，将char缓冲区中的二进制数据转换为int和short。仅出于教育目的，并且更好地了解了string.h等中已经可用的低级功能。
问题是我遇到的错误在某种程度上是随机的。我有4个功能：
getStringLength
reverseString
charsToUShort
charsToUInt
reverseString
0
length / 2
32767
getStringLength
unsigned int getStringLength(char *str){
unsigned int i = 0;
while(str[i]){
i++;
}
return i;
}
reverseString
void reverseString(char *str){
int i, m = 0;
unsigned int l = getStringLength(str);
m = l >> 1;
while(i < m){
str[i] ^= str[l - 1];
str[l - 1] ^= str[i];
str[i] ^= str[l - 1];
i++;
l--;
}
}
charsToUShort
unsigned short charsToUShort(char *str){
unsigned int l = getStringLength(str);
unsigned short result = 0;
if(l != 2){
return 0;
}else{
result |= str[0] << 8;
result |= str[1] << 0;
return result;
}
}
charsToUInt
unsigned int charsToUInt(char *str){
unsigned int l = getStringLength(str);
unsigned int result = 0;
if(l != 4){
return 0;
}else{
result |= str[0] << 24;
result |= str[1] << 16;
result |= str[2] << 8;
result |= str[3] << 0;
return result;
}
}
0: reverseString failed! Expected value: \'olleH\', actual value: \'Hello\'
1: charsToUShort passed! Expected value: \'0x6261\', actual value: \'0x6261\'
2: charsToUInt passed! Expected value: \'0x62616364\', actual value: \'0x62616364\'
0: reverseString passed! Expected value: \'olleH\', actual value: \'olleH\'
1: charsToUShort passed! Expected value: \'0x6261\', actual value: \'0x6261\'
2: charsToUInt passed! Expected value: \'0x62616364\', actual value: \'0x62616364\'
没有找到相关结果
已邀请:
1 个回复
垫歌蝎降凤
设置为零，未初始化，需要，否则循环将永远不会执行一次迭代