View Compilation Error

0_0_25140310_22397.cpp: In function 'void mul(int)':
0_0_25140310_22397.cpp:35:13: error: 'n' was not declared in this scope
     rep(i,1,n+1){
             ^
0_0_25140310_22397.cpp:12:35: note: in definition of macro 'rep'
 #define rep(i,a,n) for(int i=a; i<n; ++i)
                                   ^
0_0_25140310_22397.cpp:39:34: error: 'k' was not declared in this scope
                 temp[i][j]+=I[i][k]*a[k][j];
                                  ^
0_0_25140310_22397.cpp:43:13: error: 'n' was not declared in this scope
     rep(i,1,n+1){
             ^
0_0_25140310_22397.cpp:12:35: note: in definition of macro 'rep'
 #define rep(i,a,n) for(int i=a; i<n; ++i)
                                   ^
0_0_25140310_22397.cpp: In function 'void add()':
0_0_25140310_22397.cpp:52:13: error: 'n' was not declared in this scope
     rep(i,1,n+1){
             ^
0_0_25140310_22397.cpp:12:35: note: in definition of macro 'rep'
 #define rep(i,a,n) for(int i=a; i<n; ++i)
                                   ^