/in/foo.c: In function 'main':
/in/foo.c:6:31: warning: unused variable 'k' [-Wunused-variable]
  int a=0,b=0 , i = 0 , ii = 0,k=0,temp,f=0;
                               ^
/in/foo.c:6:24: warning: unused variable 'ii' [-Wunused-variable]
  int a=0,b=0 , i = 0 , ii = 0,k=0,temp,f=0;
                        ^~
/in/foo.c:6:16: warning: unused variable 'i' [-Wunused-variable]
  int a=0,b=0 , i = 0 , ii = 0,k=0,temp,f=0;
                ^
/in/foo.c:24:8: warning: 'temp' may be used uninitialized in this function [-Wmaybe-uninitialized]
     a=a+temp;
       ~^~~~~