strcmp 不起作用，在第二次循环迭代中找到它
int compare_filenames(char* data, char* filename){
//note: we only have 31 directory/file entries within a block
int i;
int offset;
//printf("argument %s\n", filename);
for(i = 0; i < BLOCK_SIZE; i+=16){
if(strcmp(filename, &data[i])){
offset = i + 12;
return data[i+12];// double check here
}
}
return ERR_FILE_NOT_FOUND; //didn't find it within
}
对于某些原因，即使第一个元素位于开头，strcmp 也会经历两次循环迭代
int compare_filenames(char* data, char* filename){
//note: we only have 31 directory/file entries within a block
int i;
int offset;
//printf("argument %s\n", filename);
for(i = 0; i < BLOCK_SIZE; i+=16){
if(strcmp(filename, &data[i])){
offset = i + 12;
return data[i+12];// double check here
}
}
return ERR_FILE_NOT_FOUND; //didn't find it within
}
for some reson strcmp goes through two loop iterations even when the first element is right at the beginning
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当它们相等时 strcmp() 返回 0。如果其中一个大于或小于另一个，您就会返回。
strcmp() return 0 when they are equal. You are returning if one is greater or less than the other.
您想要执行
strcmp(filename, &data[i]) == 0。0 表示字符串之间匹配，计算结果为 false...
You want to do
strcmp(filename, &data[i]) == 0.0 indicates match between strings, which evaluated as false...