View Compilation Error

0_0_31865787_14688.cpp: In function 'int main()':
0_0_31865787_14688.cpp:19:17: error: redeclaration of 'int k'
     int k=0,i,j,k;
                 ^
0_0_31865787_14688.cpp:19:9: note: 'int k' previously declared here
     int k=0,i,j,k;
         ^