Question: 5. There is a program written in C syntax: int a = 5; int f1() {a = 14; return 9;} int f20 {a = 11;

5. There is a program written in C syntax: int a = 5; int f1() {a = 14; return 9;} int f20 {a = 11; return 2;} void f30 {a = f1() + a + f20;} main() { f30;} a) (10) The function f30) has a side effect. Explain why the function has a side effect. b) (15) Rewrite a function f30) definition to avoid the side effect
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