View Compilation Error

0_0_21259843_31361.cpp: In function 'int main()':
0_0_21259843_31361.cpp:10:9: error: 'i' was not declared in this scope
     for(i = 1; i <= 100; i++) f[i] = f[i - 1] * i % Mod;
         ^
0_0_21259843_31361.cpp:15:13: error: 'i' was not declared in this scope
         for(i = 1 ; i <= m ; i++) {
             ^
0_0_21259843_31361.cpp:36:21: error: 'i' was not declared in this scope
                 for(i = 1 ; i <= n ; i++) {
                     ^
0_0_21259843_31361.cpp:37:21: error: 'x' was not declared in this scope
                     x = i ;
                     ^
0_0_21259843_31361.cpp:38:25: error: 'j' was not declared in this scope
                     for(j = m ; j > 0 ; j--)
                         ^
0_0_21259843_31361.cpp:46:21: error: 'i' was not declared in this scope
                 for(i = 1 ; i < num ; i++) ans = ans*f[n]%Mod ;
                     ^