/in/lab4.c: In function 'main':
/in/lab4.c:57:31: warning: unknown escape sequence: '\$'
                 commands[i++]='\$';
                               ^~~~
/in/lab4.c: In function 'Deal':
/in/lab4.c:145:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (i < strlen(arr))
                  ^
/in/lab4.c:186:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (i < strlen(arr))
                  ^
/in/lab4.c:231:32: warning: unknown escape sequence: '\$'
                     if(arr[j]=='\$')
                                ^~~~
/in/lab4.c:265:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (i < strlen(temp))
                  ^
/in/lab4.c:302:28: warning: unknown escape sequence: '\$'
                 if(arr[s]=='\$')
                            ^~~~
/in/lab4.c: In function 'preprocess':
/in/lab4.c:348:9: warning: unused variable 'len1' [-Wunused-variable]
     int len1=strlen(command);
         ^~~~