UVa-537-Artificial Intelligence?

// 537 - Artificial Intelligence?
#include <iostream>
#include <cstdio>
#include <cstring>
#include <iomanip>
using namespace std;

void search(char* line, char* concept, double* value)
{
char unit[10];
char* found = strstr(line, concept);
if(found != NULL)
sscanf(found+2, "%lf%s", value, unit);
switch(unit[0])
{
case 'm': *value *= 1e-3; break;
case 'k': *value *= 1e3;  break;
case 'M': *value *= 1e6;  break;
}
}

int main(void)
{
int i, T;
double P, U, I;
char line[100];

while(cin >> T)
{
getchar();
for(i=1; i<=T; i++)
{
P = U = I = 0;
cin.getline(line, 100);
search(line, "P=", &P);
search(line, "U=", &U);
search(line, "I=", &I);

cout << "Problem #" << i << endl;
if(P == 0)
cout << fixed << setprecision(2) << "P=" << I*U << "W" << endl;
else if(U == 0)
cout << fixed << setprecision(2) << "U=" << P/I << "V" << endl;
else
cout << fixed << setprecision(2) << "I=" << P/U << "A" << endl;
cout << endl;
}
}
return 0;
}