View Compilation Error

511661_0_0_7015.c: In function `main':
511661_0_0_7015.c:17: error: syntax error before '/' token
511661_0_0_7015.c:31: error: syntax error before '/' token
511661_0_0_7015.c: At top level:
511661_0_0_7015.c:42: error: `x' undeclared here (not in a function)
511661_0_0_7015.c:42: error: `y' undeclared here (not in a function)
511661_0_0_7015.c:43: error: redefinition of 'sum'
511661_0_0_7015.c:42: error: previous definition of 'sum' was here
511661_0_0_7015.c:43: error: initializer element is not constant
511661_0_0_7015.c:44: error: syntax error before string constant
511661_0_0_7015.c:44: error: conflicting types for 'printf'
511661_0_0_7015.c:44: note: a parameter list with an ellipsis can't match an empty parameter name list declaration
511661_0_0_7015.c:44: error: conflicting types for 'printf'
511661_0_0_7015.c:44: note: a parameter list with an ellipsis can't match an empty parameter name list declaration