In-depth understanding of the value range of the char type
For example:
#include <stdio.h>
int main()
{
char a[1000];
int i;
for(i=0; i<1000; i++)
{
a[i] = -1-i;
}
printf("%d",strlen(a));
return 0;
}
The result is 255
a+b prints the result in the form of %d: 300
Since the value range of unsigned char is limited in c, in the above figure, turning 55 times clockwise from 255 can get 44