09.int count;void main(){int y;y = 0;count = 0;y = f(4, 7);y = y + count ;printf("%d", y );}int f(int a, int b){count = count + 1;if ( a == 0 && b == 0 ) return(0);if ( b == 0 ) return(f(a-1, b)+ 1);return ( f(a, b-1)+ b );}上述 C 語言程式片段執行結果為 (10) 。