int romanToInt(char * s){
int count = 0;
while (*s) {
switch(*s) {
case ‘I‘:
if (*(s+1) == ‘V‘ || *(s+1) == ‘X‘) count -= 1;
else count += 1;
break;
case ‘X‘:
if (*(s+1) == ‘L‘ || *(s+1) == ‘C‘) count -= 10;
else count += 10;
break;
case ‘C‘:
if (*(s+1) == ‘D‘ || *(s+1) == ‘M‘) count -= 100;
else count += 100;
break;
case ‘V‘:
count += 5;
break;
case ‘L‘:
count += 50;
break;
case ‘D‘:
count += 500;
break;
case ‘M‘:
count += 1000;
break;
default:
break;
}
++s;
}
return count;
}
