C Language Programming exercises (i)

Question one:

Problem Description: Enter n number, n<=100, find the smallest and largest number

Input Sample: 4

1 2 3 4

Output Sample: 14

1#include"stdio.h"2 intMain () {3     intI=0; 4     intmax=0, min=0; 5     intn=0; 6     inta[ -]; 7scanf"%d",&n);8      for(i=0; i<n;i++){9scanf"%d",&a[i]);Ten     } Onemax=min=a[0]; A      for(i=1; i<n;i++){ -         if(max<=A[i]) { -max=A[i]; the         } -         if(min>=A[i]) { -min=A[i]; -         } +     } -printf"%d%d", Min,max); +}

Question two:

Problem Description: The number of N and

Input Sample: 4

1 2 3 4

Output Sample: 10

1#include"stdio.h"2 intMain () {3     intI=0; 4     intb=0;5     intn=0; 6     inta[ -]; 7scanf"%d",&n);8      for(i=0; i<n;i++){9scanf"%d",&a[i]);Ten     } One      for(i=0; i<n;i++){ Ab+=A[i]; -     } -printf"%d", b); the     return 0; -}

Question three:

Problem Description: Given two floating-point numbers, please determine whether the two floating-point numbers are equal

Input Sample: 2.980000001 2.9800000000001

Output Example: Yes

1#include"stdio.h"2 intMain () {3     floatA=0; 4     floatb=0; 5scanf"%f",&a);6scanf"%f",&b);7     if(a==C) {8printf"Yes");9     }Ten     Else{ Oneprintf"No"); A     } -     return 0; -}

Question four:

Problem Description: Retain two decimal places to output a floating-point number.

Input Sample: 11

Output Sample: 11.00

1#include"stdio.h"2 intMain () {3     DoubleA=0; 4scanf"%LF",&a);5printf"%.2lf\n", a);6     return 0;7}

　

Question five:

Problem Description: Enter the original ticket price (positive integer 3 to 4 digits, Unit: yuan), and then enter the ticket discount rate (up to one digit after the decimal point). program calculates the actual price of the ticket after discount (unit: Yuan. The result of the calculation is to round the single digit to the 10-digit "element". The input is only a single row of two numbers (two spaces separated by a space), the first is an integer, the ticket price, the second integer or real number (as real, up to 1 digits after the decimal point) represents the discount rate.

Input Sample: 888 7

Output Sample: 620

1#include"stdio.h"2 intMain ()3 {4     intA=0;5     floatb=0;6     intC=0;7     intD=0;8     intE=0;9scanf"%d%f",&a,&b);TenC= (int) (a*b*0.1); OneD= (int) c%Ten; A     if(d>=5){ -E= (c/Ten+1)*Ten; -     } the     Else{ -E= (c/Ten)*Ten; -     } -printf"%d", E);  +     return 0; -  +}

　　

Question six:

Description of the problem: give the string A and string B, and make sure B is a substring of a, and you output B where it first appears in a.

Input example: ABCD BC

Output Sample: 2

1#include <stdio.h>2#include <string.h>3 intMain ()4 {5     Charstr1[ -],str2[ -],*i,*J;6scanf"%s%s", STR1,STR2);7j=&str1[0];8I=strstr (STR1,STR2);9printf"%d", i-j+1);Ten     return 0; One}

Question seven:

Problem description:. Give an English sentence, I hope you turn over the word order in the sentence.

Input sample: I Love You

Output example: You love I

1#include <stdio.h>2#include <string.h>3 intMainvoid){4     Chara[ -];5     Charb[ -];6     intn,m,len=0;7 gets (a);8      for(n=0; N<=strlen (a)-1; n++){9len++;TenB[n]=a[strlen (a)-1-n]; One         if(A[strlen (a)-1-n]==' '){ A              for(m=n-1; m>n-len;m--)  -printf"%c", B[m]); -printf" ");  thelen=0;  -         } -     } -     if(len>0){ +          for(m=n-1; m>=n-len;m--){ -printf"%c", B[m]); +         } A     }  at     return 0; -}

(recently, when programming, logic and algorithms are the basic skills of a programmer.) We tend to value some of the tools of language, but ignore some of the underlying logic problems, resulting in the time to write code is unclear, affecting the quality of the code. So I decided to do some C language or Java programming exercises in my spare time, to exercise my logic of thinking. And synchronize the exercises in the blog, on the one hand, in order to encourage themselves, perseverance. Another convenience is to help the students who are about to get started or want to practice programming. ）

C Language Programming exercises (i)