View Compilation Error

0_0_24239894_17524.cpp: In function 'int main()':
0_0_24239894_17524.cpp:13:16: error: lvalue required as left operand of assignment
             s+c=s+c-60;
                ^
0_0_24239894_17524.cpp:14:16: error: lvalue required as left operand of assignment
             m+b=(m+b+1);
                ^
0_0_24239894_17524.cpp:17:22: error: lvalue required as increment operand
                 (h+a)++;
                      ^
0_0_24239894_17524.cpp:18:20: error: lvalue required as left operand of assignment
                 m+b=m+b-60;
                    ^
0_0_24239894_17524.cpp:21:20: error: lvalue required as left operand of assignment
                 m+b=(m+b);
                    ^
0_0_24239894_17524.cpp:27:20: error: lvalue required as left operand of assignment
                 m+b=m+b-60;
                    ^
0_0_24239894_17524.cpp:28:22: error: lvalue required as increment operand
                 (h+a)++;
                      ^
0_0_24239894_17524.cpp:31:20: error: lvalue required as left operand of assignment
                 m+b=(m+b);
                    ^