Main.c: In function 'main':
Main.c:7:2: error: expected ';' before 'printf'
printf("%d\n",s);
^
Main.c:4:12: warning: variable 's' set but not used [-Wunused-but-set-variable]
int a, b, s;
^
Main.c:5:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
scanf("%d%d",&a,&b);
^