View Compilation Error

0_0_36175183_7282.cpp: In function 'int main()':
0_0_36175183_7282.cpp:7:27: error: expected ')' before '{' token
 while(scanf("%d %d",&m,&n){
                           ^
0_0_36175183_7282.cpp:11:1: error: 'else' without a previous 'if'
 else {
 ^
0_0_36175183_7282.cpp:13:1: error: 'sum' was not declared in this scope
 sum=pow(m,n);
 ^
0_0_36175183_7282.cpp:15:15: error: 'sum' was not declared in this scope
 printf("%d\n",sum);
               ^