Podstawy Programowania C 05
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <time.h>
//*****************************************************
#define r1 4
#define r2 4
//*****************************************************
void koniec();
int los(int, int);
void wypelnij(int t[][r2], int);
void drukuj(int t[][r2], int);
void suma(int t1[][r2], int t2[][r2], int);
void iloczyn(int t1[][r2], int t2[][r2], int t3[][r2], int);
int mnoz(int t1[][r2], int t2[][r2], int, int);
//*****************************************************
//wyświetla napis
//T H E E N D
//i czeka na wciśnięcie klawisza
//*****************************************************
void koniec(){
printf("\n\n\nT H E E N D\n\n");
fflush(stdin);
getch();
}
//*****************************************************
//zwraca liczbę losową
//z przedziału [a,b]
//*****************************************************
int los(int a, int b){
int pp;
pp=(int)((rand()*(b-a+1))/(RAND_MAX+0.0))+a;
return pp;
}
//*****************************************************
//wypełnia tablicę t o rozmiarach k x r2 danymi losowymi
//*****************************************************
void wypelnij(int t[][r2], int k){
int i;
int j;
for(i=0;i<k;i++)
for(j=0;j<r2;j++)
t[i][j]=los(0,4);
}
//*****************************************************
//drukuje tablicę t o rozmiarach k x r2
//*****************************************************
void drukuj(int t[][r2], int k){
int i;
int j;
for(i=0;i<k;i++) {
for(j=0;j<r2;j++)
printf("%3d ",t[i][j]);
printf("\n");
}
}
//*****************************************************
//dodaje do tablicy t1 tablicę t2 o rozmiarach k x r2
//*****************************************************
void suma(int t1[][r2], int t2[][r2], int k){
int i;
int j;
for(i=0;i<k;i++)
for(j=0;j<r2;j++)
t1[i][j]+=t2[i][j];
}
//*****************************************************
//mnoży tablicę t1 przez tablicę t2
// o rozmiarach r2 x r2
//wynik zapisuje do tablicy t3
//*****************************************************
void iloczyn(int t1[][r2], int t2[][r2], int t3[][r2], int k){
int i;
int j;
if(r2!=k) {
printf("\n\n\n");
printf("PROGRAM mnozy tylko macierze kwadratowe ! ! !");
printf("\n\n\n");
}
else {
for(i=0;i<k;i++)
for(j=0;j<r2;j++)
t3[i][j]=mnoz(t1,t2,i,j);
}
}
//*****************************************************
//mnoży i-ty wiersz tablicy t1 przez j-tą kolumnę tablicy t2
//*****************************************************
int mnoz(int t1[][r2], int t2[][r2], int i, int j){
int ii;
int pom;
pom=0;
for(ii=0;ii<r2;ii++)
pom=pom+t1[i][ii]*t2[ii][j];
return pom;
}
//*****************************************************
//*****************************************************
//*****************************************************
int main(){
int t1[r1][r2];
int t2[r1][r2];
int t3[r1][r2];
int t4[r1][r2];
int i;
srand(time(0));
wypelnij(t1,r1);
wypelnij(t2,r1);
wypelnij(t3,r1);
printf("\n\ntablica 1\n\n");
drukuj(t1,r1);
printf("\n\ntablica 2\n\n");
drukuj(t2,r1);
suma(t3,t2,r1);
printf("\n\nSUMA\n\n");
drukuj(t3,r1);
iloczyn(t1,t2,t4,r1);
printf("\n\nILOCZYN\n\n");
drukuj(t4,r1);
koniec();
return 0;
}
W języku C argumentem funkcji może być wskaźnik do funkcji np:
void druk(void (*v)(int ),int);
void druk1(int );
void druk2(int );
void licz(int n);
//***********************************
int main(){
druk(druk1,1);
druk(druk2,1);
druk(licz,5);
return 0;
}
//***********************************
void druk1(int n) {
printf("\n\n druk 1 1 1\n");
}
//***********************************
void druk2(int n) {
printf("\n\n druk 2 2 2\n");
}
//***********************************
void druk(void (*v)(int ),int n) {
(*v)( n);
}
//***********************************
void licz(int n) {
printf("\n\n n=%d\n",n);
}
Proszę napisać funkcję
ekstremum, która zwróci maximum lub minimum w zależności od
wywołania
printf("max(%d,
%d)=%d\n",x,y,ekstr(max,x,y));
printf("min(%d,
%d)=%d\n",x,y,ekstr(min,x,y));
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