View Compilation Error

0_0_23165944_26619.cpp: In function 'int a1(int (*)[5], int)':
0_0_23165944_26619.cpp:8:25: error: 'i' was not declared in this scope
                 sum+=a1[i][j];
                         ^
0_0_23165944_26619.cpp: In function 'int a2(int (*)[5], int)':
0_0_23165944_26619.cpp:21:28: error: 'j' was not declared in this scope
                 sum+=a2[i][j];
                            ^