C language programming, the process of finding detailed solutions.

Program Problem 1: include

int main(void)

printf("I am a college student");

return 0;

Program Problem 2: include

int f(int x)

return x * x + 2 * x + 1;

int main(void)

printf("f(5) = %d", f(5));

return 0;

For reference, you still have to write it yourself. C is not difficult to get started.

Student, I just learned C language, this is not very difficult programming! I suggest you think about it, it should be possible to do it, if you look at other people's ** now, the later exams are very dangerous, and it is more difficult to take the second level! For the final exam, let's take a look at the book now!

#include

int main(void)

printf("I am a college student");

return 0;

Annotate your own name, professional class, and other information here.

#include

float f(float i)

return (i+1)*(i+1);

int main(void)

printf("f(x)=x*x+2*x+1");

printf("f(5)=%f",f(5));

return 0;

First of all, columnar. 1) x+y+z = 8, x is the number of 10 rings, y is the number of 7 rings, z is the number of 5 rings.

In columnar form. 2) 10*x+7*y+5*z=53, from 1) formula, x=8-y-z;

Bring in 2) got.

80-10*y-10*z+7*y+5*z = 53, and finally simplified to obtain 3*y+5*z = 27, z=(27-3*y) 5;

Okay, now we can program.

int x, y, z ;

int ret ;

Guess that y is between 0 and 8 based on the proposal.

for ( y=0;y<=8;y++)

I haven't compiled it, but that's the idea.

Let them be A, B, and C rings, respectively.

then there is a+b+c=8

10a+7b+5c=53

where a<5, b<8, c<11 (this should not be explained) include

void main()

Write your thoughts. int x,y,z;x, y, and z are 10, 7, and 5 rings, respectively.

int total=8;

for(x=0;x<=total;x++)for(y=0;y<=total-x;y++)for(z=0;z<=total-x-y;z++)

Landlord, do you change to: define(x,y) (x>y?x:y) Give it a try.

Change this place a bit, and the output is correct. Here's why.

Why, the specific reasons have not been analyzed.

It should be: 353

bSince there are no curly braces after if, this one only has t=a; This statement is t=a under this judgment;

The value of t after this sentence is executed is 3

a=c;The value of a after this sentence is executed is 5

c=t;The value of c after this sentence is executed is 3

aSince there are no curly braces after if, t=b; In this judgment, but a=5, b=4, c=3, because the condition is not satisfied, so t=b; Not executed.

b=a;The value of b after this sentence is executed is 5

a=t;The value of a after this sentence is executed is 3

Therefore, the final output is 353