[英]Segmentation fault when printing out arrays
This is part of the program I am working on, it is copying the file opened and then put it into an array ( file1
). 这是我正在处理的程序的一部分,它正在复制打开的文件,然后将其放入数组(
file1
)。 However, I am getting a segmentation fault when I try to print out the content of the file1
. 但是,当我尝试打印出
file1
的内容时,出现了段错误。
I had tried to set the MAX_MAC_ADD to 50 and BIG_NUM to 30000 such that it is big enough to sustain the file from fgets()
. 我试图将MAX_MAC_ADD设置为50,将BIG_NUM设置为30000,以使其足以容纳
fgets()
的文件。
The file which I am opening has 4 parts, each separate by a 'tab' 我要打开的文件有4个部分,每个部分都由一个“标签”分开
eg 1one 1two 1three 1four 2one 2two 2three 2four
例如1one 1two 1three 1four 2one 2two 2three 2four
char file1[MAX_MAC_ADD][BIG_NUM];
int num_MAC = 0;
char *Programe_Name;
int saperate_fields1(char line[])
{
int i = 0;
int f = 0;
while(line[i] != '\0' && line[i] != '\n')
{
int c = 0;
while(line[i] != '\t' && line[i] != '\0' && line[i] != '\n')
{
file1[f][c] = line[i];
++c;
++i;
}
file1[f][c] = '\0';
++f;
if(f == (MAX_MAC_ADD-1))
{
break;
}
++i;
}
return f,i;
}
void read_file1(char filename[])
{
//OPEN FOR READING
FILE *fp = fopen(filename,"r");
if(fp == NULL)
{
printf("%s: cannot open '%s'\n", Programe_Name, filename);
exit(EXIT_FAILURE);
}
char line[BUFSIZ];
while(fgets(line, sizeof line, fp) != NULL)
{
saperate_fields1(line); //SAPERATE INTO FIELDS
num_MAC = num_MAC + 1;
printf("%d times\n", num_MAC);
}
fclose(fp);
printf("line is:\n%s\n", line); //TO CHECK WHERE DO THE PROGRAM STOP READING
printf("file1 is:\n%s\n", file1);
}
You pass a pointer to an array of char
s to the format specifier %s
which expects a pointer to a char
. 您将指向
char
数组的指针传递给格式说明符%s
,该说明符期望指向char
的指针。 If you want to print your array of arrays of char
you need to print the elements individually, eg: 如果要打印
char
数组,则需要单独打印元素,例如:
for (int i = 0; i != end; ++i) {
printf("file1[%d]='%s'\n", i, file1[i]);
}
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