Mixing types:

suppose: x and y are float

operations are performed one at a time, according to priority;

x+3*(y-1) ... () * +

if operands have different types, one of them is converted (if possible);

1 is converted to float to be subtracted from y;

3 is converted to float so that it can be multiplied by (y-1);

result of each operation has same type as operands

conversion goes from int, long int, float, double, long double;

conversion may drop decimal part or significant digits;

Conversion in assignments:

int k;

k=2.9;

will result in k receiving the value 2.