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Code Issues Releases Wiki Activity

Research: Learn about the function call

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This commit is contained in:
winlin 2020-10-29 12:02:33 +08:00
parent a060befebf
commit a7961e558b
2 changed files with 56 additions and 0 deletions
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22
trunk/research/frame/frame0.cpp Normal file
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/*
g++ frame0.cpp -g -O0 -o frame && ./frame
*/
#include <stdio.h>
#include <stdlib.h>
int callee(int a, long b) {
int c = a;
c += (int)b;
return c;
}
void caller() {
int v = callee(10, 20);
printf("v=%d\n", v);
}
int main(int argc, char** argv)
{
caller();
return 0;
}

34
trunk/research/frame/frame1.cpp Normal file
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/*
g++ frame1.cpp -g -O0 -o frame && ./frame
*/
#include <stdio.h>
#include <stdlib.h>
int callee(int a, long b, long c, int d, long e, int f, int g, int h) {
int v = a;
v += (int)b;
v += (int)c;
v += (int)e;
v += (int)g;
v += (int)h;
return v;
}
void caller() {
int a = 10;
int b = 20;
long c = 30;
int d = 40;
int e = 50;
int f = 60;
int g = 70;
int h = 80;
int v = callee(a, b, c, d, e, f, g, h);
printf("v=%d, c=%ld\n", v, c);
}
int main(int argc, char** argv)
{
caller();
return 0;
}