201707-04 || (logical OR)逻辑或 名称: || 逻辑或 例子 for (int i=5; i<=95; i+=5) { if ((i<35) || (i>60)) { line (30, i, 80, i); } } .... Read More >
201707-04 && (logical AND)逻辑与 名称: && 逻辑与 例子: for (int i=5; i<=95; i+=5) { if ((i>35) && (i<60)) { stroke(0); // 设置颜.... Read More >
201707-04 ! (logical NOT)逻辑非 名称: ! 逻辑非 例子: boolean a=false; if (!a) { rect (30, 20, 50, 50); } if (a) { line (20, 10, 90,80); line(20, 8.... Read More >
201707-04 switch 名称: switch 例子: int num=1; switch(num) { case 0: println(“zero”); //b不执行 break; case 1: println(“one”); //输出 one break; }  .... Read More >
201707-04 if如果 名称: if 例子: for (int i=5; i<height; i+=5) { stroke(255); //设置颜色为白色, if (i<35) { str.... Read More >
201707-04 else 名称: else 例子: for (int i=5; i<95; i+=5) { if (i<35) { line(30,i,80,i); } else { line(20, i.... Read More >
201707-04 default 名称: default 例子: char letter=’B’; switch(letter) { case ‘a’: println(“Alpha”); //不执行 break; case ‘b’: println(“Bra.... Read More >
201707-04 continue 名称: continue 例子: for (int i=0; i<100; i+=10) { if (i ==70) { //如果 i 是70,跳出这次循环,所以留不会执行line continue; } line(i, 0, i, height); } 描述: 当在f.... Read More >
201707-04 case 名称: case 例子: char letter=’B’; switch(letter) { case ‘a’: println(“Alpha”); //不执行 break; case ‘b’: println(“Bravo”).... Read More >
201707-04 break 名称: break 例子: char letter=’B’; switch(letter) { case ‘a’: println(“Alpha”); //不执行 case ‘b’: println(“Bravo”); //输出“Bravo” .... Read More >
201707-04 ?: (conditional)条件? 名称: ?: 条件运算符 例子: int s=0; for(int i=5; i<100; i+ =5) { s=(i<50) ? 0:255; stroke(s); line(30,i, 80,i); } 描述:if, else.... Read More >
201707-04 while 名称: while 例子: int i=0; while (i<80) { line(30, i, 80, i); i=i+5; } 描述:控制一系列的循环。输出为真时,while 循环结构会.... Read More >
201707-04 for 名称: for 例子: for (int i=0; i<40; i=i+1) { line(30, i, 80, i ); } for (int i=0; i<80; i=i+5) { .... Read More >
201707-04 >= (greater than or equal to)大于等于 名称: >= (大于等于) 例子: int a=23; int b=23; if (a >= b ){ println(“variable a is greater or equal to variable a”) //输出 变量b大于等于变量a } .... Read More >
201707-04 > (greater than)大于 名称: > (大于) 例子: int a=5; int b=13; if (b >a ){ println(“variable b is larger than variable a”) //输出 变量b大于变量a } 描述: 判断左边.... Read More >
201707-04 == (equality)等于 名称: == (等于) 例子: int a=23; int b=23; if (a == b) { pritnln(“variables a and b are equal”); //输出 变量a和b相等 } 描述: 确定两个变量是否相等。等.... Read More >
201707-04 <= (less than or equal to) 名称: <= (小于等于) 例子: int a=22; int b=23; if (a<=b) { println(“variable a is less or equal to variable b”); //输出 变量a小于等于白变量b }  .... Read More >
201707-04 < (less than)小于 名称: < (小于) 例子: int a=22; int b=23; if (a < b) { println(“variable a is less than variable b”) //输出 变量a 比变量b小 } 描述: 判断是否左边的变量小于右.... Read More >