View Compilation Error

0_0_31854253_28954.cpp: In function 'int main()':
0_0_31854253_28954.cpp:7:24: error: 'c' was not declared in this scope
     while(~scanf("%d",&c)){
                        ^
0_0_31854253_28954.cpp:9:25: error: 'n' was not declared in this scope
             scanf("%d",&n,&m);
                         ^
0_0_31854253_28954.cpp:9:28: error: 'm' was not declared in this scope
             scanf("%d",&n,&m);
                            ^
0_0_31854253_28954.cpp:10:13: error: 'fz' was not declared in this scope
             fz = 1;
             ^
0_0_31854253_28954.cpp:11:13: error: 'fm' was not declared in this scope
             fm = 1;
             ^