0_0_21092575_22742.cpp: In function 'int main()':
0_0_21092575_22742.cpp:4:32: error: 'scanf' was not declared in this scope
while (scanf("%d%d", &w, &h) != EOF)
^
0_0_21092575_22742.cpp:4:37: error: 'EOF' was not declared in this scope
while (scanf("%d%d", &w, &h) != EOF)
^
0_0_21092575_22742.cpp:6:20: error: 'putchar' was not declared in this scope
putchar('+');
^
0_0_21092575_22742.cpp:22:23: error: 'printf' was not declared in this scope
printf("+\n\n");
^
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