This program will ask user to enter no.of missionaries and cannibals to be transported in the boat on other side of the river.
and if any time the no.of missionaries are less then the no.of cannibals on any side the user will lose the game.
and user will win only when he can successfully make all the missionaries and cannibals cross the river.
CODE :
// 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;
}
Missionaries and Cannibals Sample output
garimacoder 