foo.c: In function 'main':
foo.c:4:9: warning: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
4 | scanf("%d", &n);
| ^~~~~
foo.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
+++ |+#include <stdio.h>
1 | int main()
foo.c:4:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
4 | scanf("%d", &n);
| ^~~~~
foo.c:4:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
foo.c:7:25: warning: implicit declaration of function 'sqrt' [-Wimplicit-function-declaration]
7 | int a = sqrt(i);
| ^~~~
foo.c:1:1: note: include '<math.h>' or provide a declaration of 'sqrt'
+++ |+#include <math.h>
1 | int main()
foo.c:7:25: warning: incompatible implicit declaration of built-in function 'sqrt' [-Wbuiltin-declaration-mismatch]
7 | int a = sqrt(i);
| ^~~~
foo.c:7:25: note: include '<math.h>' or provide a declaration of 'sqrt'
foo.c:21:25: warning: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
21 | printf("%d+%d=%d\n", i, n - i, n);
| ^~~~~~
foo.c:21:25: note: include '<stdio.h>' or provide a declaration of 'printf'
foo.c:21:25: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
foo.c:21:25: note: include '<stdio.h>' or provide a declaration of 'printf'
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