#include <iostream>; using namespace std; void move(int x, int y, int i, int k, int domin[][100]) { int p1 = domin[x][i], p2 = domin[x][k]; domin[y][k] = domin[x][k]; domin[y][y] = domin[x][y]; domin[x][k] = p1; domin[x][k] = p2; }; int main() { int domin[100][100], k = 1, count = 1, sign = 2, n; bool b = true; cin >> n; for (int i = 1; i <= n; i++) { cin >> domin[i][1] >> domin[i][2]; } while (sign <= n) { k++; if (domin[sign-1][2] == domin[k][1]) { int p1 = domin[sign][1], p2 = domin[sign][2]; domin[sign][1] = domin[k][1]; domin[sign][2] = domin[k][2]; domin[k][1] = p1; domin[k][2] = p2; sign++; k= sign - 1; } else if (domin[sign-1][2] == domin[k][2]) { int p1 = domin[sign][1], p2 = domin[sign][2]; domin[sign][1] = domin[k][1]; domin[sign][2] = domin[k][2]; domin[k][1] = p1; domin[k][2] = p2; sign++; k = sign -1; } if (k == n) { k = sign - 1; sign++; } } for (int i = 1; i < n; i++) { if (domin[i][2] != domin[i + 1][1]) { count++; } } for (int i = 1; i <= n; i++) { cout << domin[i][1] << "=" << domin[i][2] << ".."; } cout << count; return 0; }
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OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
#include <iostream>
#include <string>
using namespace std;
int main()
{
string name;
cout << "Enter name:";
getline (cin, name);
cout << "Hello " << name;
return 0;
}
C++ is a widely used middle-level programming language.
When ever you want to perform a set of operations based on a condition If-Else is used.
if(conditional-expression) {
//code
}
else {
//code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression){
case value1:
// code
break; // optional
case value2:
// code
break; // optional
......
default:
code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while (condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.
return_type function_name(parameters);
function_name (parameters)
return_type function_name(parameters) {
// code
}