0_0_33807278_22400.cpp: In function 'int main()': 0_0_33807278_22400.cpp:32:16: error: 's1' was not declared in this scope strcat(s1 , s2) ; ^ 0_0_33807278_22400.cpp:32:21: error: 's2' was not declared in this scope strcat(s1 , s2) ; ^