/in/lab5.c: In function 'main':
/in/lab5.c:215:35: warning: format not a string literal and no format arguments [-Wformat-security]
         sprintf(variables[i].name,str);
                                   ^~~
/in/lab5.c:283:41: warning: format not a string literal and no format arguments [-Wformat-security]
         if (detect==0) sprintf(infix_re,infix);
                                         ^~~~~