0_0_22848318_8730.cpp:6:1: error: '_Bool' does not name a type _Bool check[MAXL]; ^ 0_0_22848318_8730.cpp: In function 'int dabiao()': 0_0_22848318_8730.cpp:11:16: error: 'check' was not declared in this scope memset(check, 0, sizeof(check)); ^