foo.c:1:1: warning: data definition has no type or storage class
    1 | a,b=map(int,input().split())
      | ^
foo.c:1:1: warning: type defaults to 'int' in declaration of 'a' [-Wimplicit-int]
foo.c:1:3: warning: type defaults to 'int' in declaration of 'b' [-Wimplicit-int]
    1 | a,b=map(int,input().split())
      |   ^
foo.c:1:5: warning: implicit declaration of function 'map' [-Wimplicit-function-declaration]
    1 | a,b=map(int,input().split())
      |     ^~~
foo.c:1:9: error: expected expression before 'int'
    1 | a,b=map(int,input().split())
      |         ^~~
foo.c:2:1: error: expected ',' or ';' before 'print'
    2 | print(a,'+',b,'=',a+b,sep='')
      | ^~~~~
foo.c:2:27: error: empty character constant
    2 | print(a,'+',b,'=',a+b,sep='')
      |                           ^~

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