0_0_33329965_27502.cpp: In function 'int main()': 0_0_33329965_27502.cpp:21:7: error: 'len1' was not declared in this scope if (len1 > len2) { ^ 0_0_33329965_27502.cpp:21:14: error: 'len2' was not declared in this scope if (len1 > len2) { ^