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#include <iostream>
using namespace std;
 
int main() {
   int a,b,c;
   cout << " Ingrese tres numeros. ";
   cin >>a>>b>>c 
	int a,b,c =  (a+b > c) + (a+c > b)  + (b+c >a);
   switch(a,b,c) {
   case  true:
	   cout << num << " forma un triangulo./n ";
       break;
   switch (a+b>c)
	   cout << "es escaleno";
   switch (a=b=c)
	   cout << "es equilatero";
   switch(a==b && b==c) + (a==b||b==c||a==c)
	   cout<<"es isosseles";
	 case false:
       cout << num << " no forma un triangulo/n ";
       break;
 
   }
   cin.ignore();
   cin.get();
}
 
 

prog.cob:1: Warning: Invalid indicator 'n' at column 7
prog.cob:5: Warning: Invalid indicator 't' at column 7
prog.cob:8: Warning: Invalid indicator 't' at column 7
prog.cob:12: Warning: Invalid indicator 't' at column 7
prog.cob:14: Warning: Invalid indicator 't' at column 7
prog.cob:16: Warning: Invalid indicator 't' at column 7
prog.cob:21: Warning: Invalid indicator '.' at column 7
prog.cob:24: Warning: Invalid indicator '.' at column 7
prog.cob:28: Error: syntax error

Standard output is empty