View Compilation Error

0_0_37287479_8318.cpp: In function 'int main()':
0_0_37287479_8318.cpp:6:26: error: 'gets' was not declared in this scope
     while(strcmp(gets(str),"#")!=0)
                          ^
0_0_37287479_8318.cpp:42:26: error: 'printf' was not declared in this scope
         printf("%d\n",sum);
                          ^