#include <stdio.h>
int main(){
int x,y,z;
while(1){
printf("Enter the lengths of three sides of a triangle:\t");
scanf("%d %d %d",&x,&y,&z);
if(x>0&&y>0&&z>0){
if((x==y) && (y==z)){
printf("The triangle is equilateral\t");
}
else if((x==z) || (y==z) || (x==y)){
printf("The triangle is isoseles\t");
}
else{
printf("The triangle is scalene\t");
}
break;
}
else{
printf("Sorry, sides of triangle cannot be 0 or negative value!\n");
}
}
return 0;
}
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