0_0_35027697_6283.cpp:12:11: error: '::main' must return 'int' void main(){ ^ 0_0_35027697_6283.cpp: In function 'int main()': 0_0_35027697_6283.cpp:13:25: error: 'memset' was not declared in this scope memset(s,0,sizeof(s)); ^