#题目: a = 2 b = 5 print("YES") ___ print("NO") #答案: a = 2 b = 5 print("YES") if a == b else print("NO") Use an if statement to print "YES" if either a or b is equal to c. 使用if 语句,使得如果a或b等于c,则输出“YES”。 #题目: a = 2 b = 50 c = 2...
if (letter === "c") { text = "Spot on! Good job!"; // If the letter is "b" or "d" } else if (letter === "b" || letter === "d") { text = "Close, but not close enough."; // If the letter is anything else } else { text = "Waaay off.."; } document.getEle...
if (prevScrollpos > currentScrollPos) { document.getElementById("navbar").style.top = "0"; } else { document.getElementById("navbar").style.top = "-50px"; } prevScrollpos = currentScrollPos; }
1、PV操作 首先来看P操作(等待信号量): 可以理解为: if ( (s = s - 1) >= 0 ) 继续执行本进程; else 挂起本进程/本进程等待; 然后再来看V操作: 可以理解为: if ( (s = s + 1) >0 ) 不唤醒s的队列中的等待进程; else // (s = s + 1) <= 0 唤醒s的队列中的等待进程; 继续执行本...
functionget_http_response_code($theURL){$headers=get_headers($theURL);returnsubstr($headers[0],9,3);}if(intval(get_http_response_code('filename.jpg'))<400){echo"file was found";}else{echo"no file found";} It shows nothing on the page. ...
What is the purpose of theelse ifstatement in C? To check a new condition if the firstifcondition is true To end the program To specify a new condition if the firstifcondition is false To repeat the previous condition Submit Answer »...
// If reallocation fails printf("Failed. Unable to resize memory"); }else{ // If reallocation is sucessful printf("Success. 8 bytes reallocated at address %p \n",ptr2); ptr1=ptr2;// Update ptr1 to point to the newly allocated memory ...
else: tab[i][w] = tab[i-1][w] for row in tab: print(row) items_included = [] w = capacity for i in range(n, 0, -1): if tab[i][w] != tab[i-1][w]: items_included.append(i-1) w -= weights[i-1] print("\nItems included:", items_included) ...
C has the following conditional statements:Use if to specify a block of code to be executed, if a specified condition is true Use else to specify a block of code to be executed, if the same condition is false Use else if to specify a new condition to test, if the first condition is...
charmyStr1[]="ABCD";charmyStr2[]="ABCE";intcmp=memcmp(myStr1,myStr2,4);if(cmp>0){cout<<myStr1<<" is greater than "<<myStr2<<"\n";}elseif(cmp<0){cout<<myStr2<<" is greater than "<<myStr1<<"\n";}else{cout<<myStr1<<" is equal to "<<myStr2<<"\n";} ...