What does main return? Consider the following program:

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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These are C programs, but they won't compile for me. What do they return?

What does main return?
Consider the following program:
int f(int x, int y);
int a = 3;
int b = 2;
int main(void) {
int c = a + b;
int d = a*b;
int e = f(c,d);
return e;
}
int f(int x, int y) {
a = x*y;
b = x + y;
return a + b;
}
What (base-ten) integer does this main?
Variables and Functions
0.
Consider the following program:
int n(int x);
int a = 1;
int main(void) {
a = a << 2;
return n(a);
}
int n(int x) {
if (x) {
return a;
}
else {
return x;
}
a = n(a);
a = n(a);
return a + x;
What integer does this main return?
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Transcribed Image Text:What does main return? Consider the following program: int f(int x, int y); int a = 3; int b = 2; int main(void) { int c = a + b; int d = a*b; int e = f(c,d); return e; } int f(int x, int y) { a = x*y; b = x + y; return a + b; } What (base-ten) integer does this main? Variables and Functions 0. Consider the following program: int n(int x); int a = 1; int main(void) { a = a << 2; return n(a); } int n(int x) { if (x) { return a; } else { return x; } a = n(a); a = n(a); return a + x; What integer does this main return? Save
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