Gdb get return value of function

int fun() {
	return 42;
}

int main() {
	fun();
    return 0;
}

(gdb) break 2   // set breakpoint at line 2
(gdb) r

Breakpoint 1, fun () at test.c:2
2               return 42;

(gdb) finish   // $1 is the value the function returned.

Run till exit from #0  fun () at test.c:2
main () at test.c:7
7               return 0;
Value returned is $1 = 42   // we get the return value is 42

Source: stackoverflow.com

Similar codes

0 vote120 views1 answer
Find maximum sum of circular subarray
C++
9 votes112 views3 answers
String iterator in c++
C++
1 vote107 views1 answer
Call by value in c++
C++
0 vote113 views1 answer
All in one c++
C++
0 vote112 views1 answer
What is blob in computer vision
C++
0 vote105 views1 answer
Why the << operator is friend
C++
0 vote111 views1 answer
C++ sorting and keeping track of indexes
C++
5 votes114 views2 answers
Time measurement c++
C++
4 votes131 views2 answers
Gcd function c++
C++
0 vote129 views1 answer
C++ how to skip the last element of vector
C++