"Missionaries and cannibals problem solution in C++" Code Answer's

Missionaries and cannibals problem solution in C++

By Odd Ostrich on Mar 12, 2021

 
// missionaries and cannibals
#include<iostream>
#include<iomanip>
using namespace std;
class game{
public:
int counto, i;
char left[6], right[6];
int m_num, c_num;
bool side;
int ml_count, cl_count;
int mr_count, cr_count;
game(){
counto = 1;
ml_count = cl_count = 3;
mr_count = cr_count = 0;
side = false;
for (i = 0; i<3; i++){
left[i] = 'M';
left[i + 3] = 'C';
right[i] = ' ';
right[i + 3] = ' ';
}
}
void get(){
start:
cout << "\nEnter no.of missionaries= ";
cin >> m_num;
cout << "\nEnter no.of cannibals= ";
cin >> c_num;
if (m_num>3 || c_num>3 || m_num<0 || c_num<0)
goto start;
else if ((m_num + c_num)>2 || (m_num + c_num == 0))
goto start;
}
void displaymc(){
cout << "\nleft side\tright side\n";
for (i = 0; i<3; i++)
cout << left[i] << " ";
cout << "\t\t";
for (i = 0; i<3; i++)
cout << right[i] << " ";
cout << endl;
for (i = 3; i<6; i++)
cout << left[i] << " ";
cout << "\t\t";
for (i = 3; i<6; i++)
cout << right[i] << " ";
cout << endl;
if (counto % 2 == 0){
side = true;
cout << "\nBoat on right side of river\n";
}
else{
side = false;
cout << "\nBoat on left side of river\n";
}
}
void boat_lr(){
for (i = 0; i<m_num; i++){
if (left[0] == 'M'){
left[0] = ' ';
right[0] = 'M';
ml_count -= 1;
mr_count += 1;
}
else if (left[1] == 'M'){
left[1] = ' ';
right[1] = 'M';
ml_count -= 1;
mr_count += 1;
}
else if (left[2] == 'M'){
left[2] = ' ';
right[2] = 'M';
ml_count -= 1;
mr_count += 1;
}
}
for (i = 0; i<c_num; i++){
if (left[3] == 'C'){
left[3] = ' ';
right[3] = 'C';
cl_count -= 1;
cr_count += 1;
}
else if (left[4] == 'C'){
left[4] = ' ';
right[4] = 'C';
cl_count -= 1;
cr_count += 1;
}
else if (left[5] == 'C'){
left[5] = ' ';
right[5] = 'C';
cl_count -= 1;
cr_count += 1;
}
}
}
void boat_rl(){
for (i = 0; i<m_num; i++){
if (right[0] == 'M'){
right[0] = ' ';
left[0] = 'M';
ml_count += 1;
mr_count -= 1;
}
else if (right[1] == 'M'){
right[1] = ' ';
left[1] = 'M';
ml_count += 1;
mr_count -= 1;
}
else if (right[2] == 'M'){
right[2] = ' ';
left[2] = 'M';
ml_count += 1;
mr_count -= 1;
}
}
for (i = 0; i<c_num; i++){
if (right[3] == 'C'){
right[3] = ' ';
left[3] = 'C';
cl_count += 1;
cr_count -= 1;
}
else if (right[4] == 'C'){
right[4] = ' ';
left[4] = 'C';
cl_count += 1;
cr_count -= 1;
}
else if (right[5] == 'C'){
right[5] = ' ';
left[5] = 'C';
cl_count += 1;
cr_count -= 1;
}
}
}
};
int main(){
game g;
while (true){
if (g.ml_count<g.cl_count && g.ml_count>0 || g.mr_count<g.cr_count && g.mr_count>0){
cout << "\n\n~~~~~~~~~~~~~~~~YOU LOST!!~~~~~~~~~~~~~~~~\n";
break;
}
else if (g.cr_count == g.mr_count && g.cr_count == 3 && g.mr_count == 3){
cout << "\n\n~~~~~~~~~~~~~~~~YOU WON!!~~~~~~~~~~~~~~~~\n";
break;
}
else{
g.displaymc();
g.get();
if (g.side == false)
g.boat_lr();
else
g.boat_rl();
}
g.counto++;
}
return 0;
}

Source: garimacoder.wordpress.com

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