C Language Learning selection structure programming (third day)

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To increase understanding, write a few small programs

1: Judging the formation of the triangle and the output of the maximum side practice the first three statements

#include <stdio.h>int main () {int a,b,c;printf ("Enter the triangle three sides long (the edge is an integer, cannot enter a negative number):"); scanf ("%d%d%d", &a, &b,& c) if ((a+b) >c&& (a+c) >b&& (b+c) >a) {printf ("can form a triangle \ n"); if ((a>b&&a>c) | | ((a=b) >c)) printf ("%d\n", a); Else{if (b>a&&b>c) | | ((b=c) >a)) printf ("%d\n", b); elseprintf ("%d\n", c); }}elseprintf ("Cannot form a triangle"); GetChar ();

}

2: Judge the output after the exercise of the two statements

#include <stdio.h>int main () {char a;printf ("Please enter your score level: \ n"), scanf ("%c", &a); switch (a) {case ' a ': printf ("Good" ); Break;case ' B ': printf ("good"); Break;case ' C ': printf ("Pass"); break;default:printf ("Incorrect input"); }}

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C Language Learning selection structure programming (third day)