Third time job

One, guess Price game

Experimental requirements: Look at the commodity guessing price games

Code:

#include <stdio.h>#include<stdlib.h>#include<time.h>intMain () {intb;    Srand (Time (NULL)); A=rand ()%Ten+1; printf ("Please enter what you think is the price \ n"); scanf ("%d",&b); if(a==b) {printf ("Congratulations, you guessed right. \ n"); }    Else{printf ("you guessed wrong, the correct price is%d\n", a); }    return 0;}

Operation Result:

Experiment Summary: Pay attention to the time setting

Second, the Age problem

Experimental requirements:

Enter a student's birthday (year: Month: Day), and enter the current date (year: Month: Day) to calculate the actual age (years) of the birth.

Code:

#include <stdio.h>#include<stdlib.h>intMain () {inta,b,c,d,e,f,g,m,n,x; printf ("Enter your birthday, separated by commas \ n"); scanf ("%d,%d,%d",&a,&b,&c); printf ("Enter the current date, separated by commas \ n"); scanf ("%d,%d,%d",&d,&e,&f); if(b==1|| b==3|| b==5|| b==7|| b==8|| b==Ten|| b== A|| e==1|| e==3|| e==5|| e==7|| e==8|| e==Ten|| e== A)    {        if((c> to&&c<1)|| (f> to&&f<1) {printf ("error \ n"); Exit (0); }    }        Else if(b==4|| b==6|| b==9|| b== One|| e==4|| e==6|| e==9|| e== One)    {        if((c> -&&c<1)|| (f> -&&f<1) {printf ("error \ n"); Exit (0); }    }            Else if(b==2|| e==2)    {        if((c> in&&c<1)|| (f> in&&f<1) {printf ("error \ n"); Exit (0); }    }        Else{printf ("error \ n"); Exit (0); } m=a*10000+b* -+C; N=d*10000+e* -+F; X=n-m; G=x/10000; printf ("you are%d years old \ n", G); return 0;}

Results:

Summary: To be aware of the use of if and else, learn to terminate the program with exit (0)

Three, character judgment

Requirements:

Enter a character to determine if it is lowercase letter output its corresponding uppercase letter, if it is uppercase letters output its corresponding lowercase, if the digital output number itself, if it is a space, output "space", if not the case, output "other".

Code:

#include <stdio.h>intMain () {Charb; printf ("Enter a character. \ n"); scanf ("%c",&a); if(a>='a'&&a<='Z') {b=a- +; printf ("%c\n", B); }    Else if(a>='A'&&a<='Z') {b=a+ +; printf ("%c\n", B); }    Else if(a==' ') {printf ("space\n"); }    Else if(a>='0'&&a<='9') {printf ("%c\n", a); }    Else{printf (" Other"); }    return 0;}

Results:

Summary: To use char to save characters and spaces

Four, triangle

Requirements:

Enter three integers to determine the type of triangle (equilateral triangle, isosceles triangle, isosceles right triangle, right triangle, general triangles, and non-triangles)

Code:

#include <stdio.h>intMain () {intA,b,c; printf ("Please enter the length of the triangular three sides \ n"); scanf ("%d,%d,%d",&a,&b,&c); if(a+b>c&&a+c>b&&b+c>a&&a-c<b&&a-b<c&&b-c<a) {if((a==b&&a!=c) | | (a==c&&a!=b) | | b==c&&b!=a) {printf ("isosceles triangle \ n"); }        Else if(a==b&&b==c) {printf ("equilateral triangle \ n"); }        Else if((a*a+b*b==c*c) | | (b*b+c*c==a*a) | | a*a+c*c==b*b) {printf ("right triangle \ n"); }        Else if((a==b&&a*a+b*b==c*c) | | (a==c&&a*a+c*c==b*b) | | b==c&&b*b+c*c==a*a) {printf ("isosceles right triangle \ n"); }        Else{printf ("General triangle \ n"); }    }    Else{printf ("non-triangular \ n"); }    return 0;}

Results:

Summary: To use good "| |" " && "and other symbols

Third time job