0_0_20225049_31096.cpp: In function 'int main()': 0_0_20225049_31096.cpp:19:22: error: 'memset' was not declared in this scope memset(a,0,sizeof(a)); ^ 0_0_20225049_31096.cpp:24:19: error: 'strlen' was not declared in this scope int len=strlen(s); ^