scanf5.c:1:1: warning: return type defaults to ‘int’ [-Wreturn-type]
main(){int a,b;scanf("%d%d",&a,&b);printf("%g",double(a+b)/2);}
^
scanf5.c: In function ‘main’:
scanf5.c:1:1: warning: implicit declaration of function ‘scanf’ [-Wimplicit-function-declaration]
scanf5.c:1:16: warning: incompatible implicit declaration of built-in function ‘scanf’
main(){int a,b;scanf("%d%d",&a,&b);printf("%g",double(a+b)/2);}
^
scanf5.c:1:1: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
main(){int a,b;scanf("%d%d",&a,&b);printf("%g",double(a+b)/2);}
^
scanf5.c:1:36: warning: incompatible implicit declaration of built-in function ‘printf’
main(){int a,b;scanf("%d%d",&a,&b);printf("%g",double(a+b)/2);}
^
scanf5.c:1:48: error: expected expression before ‘double’
main(){int a,b;scanf("%d%d",&a,&b);printf("%g",double(a+b)/2);}
^
scanf5.c:1:48: warning: control reaches end of non-void function [-Wreturn-type]
main(){int a,b;scanf("%d%d",&a,&b);printf("%g",double(a+b)/2);}
^
