View Compilation Error

0_0_24089833_106.cpp: In function 'int main()':
0_0_24089833_106.cpp:7:30: error: 'scanf' was not declared in this scope
     while (scanf("%d%d",&a,&b)!=EOF&&a&&b)  
                              ^
0_0_24089833_106.cpp:7:33: error: 'EOF' was not declared in this scope
     while (scanf("%d%d",&a,&b)!=EOF&&a&&b)  
                                 ^
0_0_24089833_106.cpp:13:39: error: 'printf' was not declared in this scope
             printf("[%d,%d]\n",i,i+j-1);  
                                       ^
0_0_24089833_106.cpp:15:20: error: 'printf' was not declared in this scope
         printf("\n");  
                    ^