View Compilation Error

0_0_25537248_1052.cpp: In function 'void merge(int, int)':
0_0_25537248_1052.cpp:19:9: error: 'j' was not declared in this scope
   while(j<=r)c[tmp++]=a[j++];
         ^
0_0_25537248_1052.cpp:24:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_25537248_1052.cpp:33:1: error: expected '}' at end of input
 }
 ^