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### C Language: Required to follow the test results of the level output percentile score section, the grade of grades by the keyboard input.

Request according to test grade grade output percentile score section,a and so on above,B and so on 70~84 points, C and other for 60~69 ,D and so on for the following points. The grade of the grade is entered by the keyboard. Solution: Program:#include int main (){char grade

### Output gradelevel &amp;&amp; determine the condition of the two-second equation root

-4AC; if(A = =0) {Console.WriteLine ("This equation is not a unary two-time equation ."); } Else if(D >0) {Console.WriteLine ("This equation is a two-dimensional equation and has two unequal real roots"); } Else if(d = =0) {Console.WriteLine ("This equation is a unary two-time equation and has two equal real roots"); } Else{Console.WriteLine ("This equation is a unary two-time equation, but no real roots ."); } console.readline (); } Output

### 100.64.0.0/10 is the address segment reserved for the carrier-level NAT Intranet, that is, cgn (Carrier-grade Nat)

Tags: Intranet address 100.64.0.0/10 Intranet reserved segment, used for carrier-level NAT (cgn). For details, see RFC April 2012 published on April 9, 6598. The public IP address in Jiangsu is not enough. This IP address has been used for allocation to users this year. Http://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml 100.64.0.0/10 is the address segment reserved for the carrier-

### The National Computer Grade examination two level course-C language Programming _ the 10th Chapter _ String

Chart[ -], a[3][ -];7 for(i =0; I 3; i++)/*assign a value to a table*/8 {9 gets (A[i]);Ten } One Aprintf"\ n"); - for(i =0; I 3; i++)/*Output a table*/ - { the puts (a[i]); - } -printf"\ n"); - + for(i =0; I 3-1; i++) - { + for(j = i +1; J 3; j + +) A { at if(strcmp (A[i], a[j]) 0)/*string comparison function strcmp, if the former a[i]*/ - { -strcpy (t, A[i]);/*string copy function strcpy*/ - strcpy (A[i], a[j]);

### The National Computer Grade examination two level course-C Language Programming _ 16th _ file

Example 16.1Output the text entered from the keyboard as-is to a file named File_a.dat, with the character @ as the keyboard input end flag.(1) Open the file.(2) Enter a character from the keyboard.(3) Determine if the input character is @. If so, end the loop and perform step (7).(4) Output the characters you have just entered into the specified file.(5) Enter a character from the keyboard.(6) Repeat steps (3) to (5).(7) Close the file.(8) End of procedure.1#include 2#include 3 4 Main ()5 {6FIL

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### The National Computer Grade examination two level course-C language Programming _ 14th-structure, common and user-defined types

return value of the function.1#include 2 3typedefstruct4 {5 intA;6 Charb;7 }st;8 9St * Fun (St X)/*The return value type of the function is St * Type*/Ten { OneST *px; AX.A = -; -x.b ='C'; -PX = x; the returnpx; - } - - Main () + { -ST y, *p; +Y.A =999; Ay.b ='X'; atprintf"y.a=%d y.b=%c\n", Y.A, y.b); -p =Fun (y); -printf"(*p). a=%d (* p). b=%c\n", (*p). A, (*p). b); -}Output Result:y.a=999 y.b=x(*p). a=100 (* p). b=cPlease press any key to continue ...123The National Computer

### The National Computer Grade examination two level Web Design Examination Outline (2013 edition)

The National Computer Grade examination two level Web Design Examination Outline (2013 edition)Turn from: National Computer grade exam, computer level Two, free training, free video tutorial, perpetual free, free training itBasic requirements1. Understand how the Web works and understand the fundamentals of web techno

### The National computer Grade examination level two C language Program Design Examination Outline (2013 edition)

The National computer Grade examination level two C language Program Design Examination Outline (2013 edition)Transferred from: http://www.freencre.com/c2_artde_28.htmlBasic requirements1. Be familiar with visual c++6. 0 integrated development environment.2. Master the method of structured programming, with good program design style.3. Master the simple data structure and algorithm in the program design and

### In the process of development, how to learn English the fastest to read more foreign documents. See level four grade six or what vocabulary or do you look at the side of the collection?

In the process of development, how to learn English the fastest to read more foreign documents. See level four grade six or what vocabulary or do you look at the side of the collection? Reply content: In the process of development, how to learn English the fastest to read more foreign documents. See level four grade

### The National Computer Grade examination two level course-C Language Programming _ 15th Chapter _ Bit operation

Original codeAlso called symbol-absolute value codeThe highest bit 0 indicates positive, 1 is negative, and the remaining bits is the absolute value of the number bits.Easy to understand the original codeSubtraction complex, there are subtraction four kinds of operations, increase the complexity of the CPUThe zero representation is not uniqueNot applied in the computerAnti-codeThe anti-code operation is inconvenient, nor is it applied in the computer.Shift CodeThe shift code represents the value

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