View Compilation Error

0_0_35290544_6208.c: In function 'main':
0_0_35290544_6208.c:24:21: error: expected expression before '/' token
    for(i=1;y>=R;i++)//while(y>=R)
                     ^
0_0_35290544_6208.c:34:4: error: expected expression before '/' token
    //x=y*i+x;
    ^