foo.c: In function 'main':
foo.c:7:16: error: expected ';' before 'printf'
    7 |         sum=a+b
      |                ^
      |                ;
    8 |         printf("%d",sum);
      |         ~~~~~~  
foo.c:5:17: warning: variable 'sum' set but not used [-Wunused-but-set-variable]
    5 |         int a,b,sum;
      |                 ^~~

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