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int a;
int f() {
int a;
// Undefined variable b
// printf("f 0: a = %d b = %d\n", a, b);
printf("f 0: a = %d\n", a);
a = 2;
printf("f 1: a = %d\n", a);
}
int g(int a) {
printf("g 0: a = %d\n", a);
a = 3;
printf("g 1: a = %d\n", a);
}
int h(int a) {
// int a; // gcc 4.3 says error: 'a' redeclared as different kind of symbol
printf("h 0: a = %d\n", a);
a = 4;
printf("h 1: a = %d\n", a);
}
// Already defined global
// int h() {}
int globCheck() {
fprintf(stdout, "globCheck()\n");
}
int fwdCheck() {
b();
// Undefined forward reference
// c();
}
int b() {
printf("b()\n");
}
int nested() {
int a;
printf("nested 0: a = %d\n", a);
a = 50;
printf("nested 1: a = %d\n", a);
{
int a;
printf("nested 2: a = %d\n", a);
a = 51;
printf("nested 3: a = %d\n", a);
}
printf("nested 4: a = %d\n", a);
}
int main() {
globCheck();
fwdCheck();
printf("main 0: a = %d\n", a);
a = 5;
printf("main 1: a = %d\n", a);
f();
printf("main 2: a = %d\n", a);
g(77);
printf("main 3: a = %d\n", a);
h(30);
printf("main 4: a = %d\n", a);
nested();
printf("main 5: a = %d\n", a);
return 0;
}
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