如何產生各種隨機數

產生int型隨機數 ?

#include<stdio.h> #include<stdlib.h> #include<string.h> #include<math.h> #include<time.h> int?main( ) { ????//freopen( "1.in","r",stdin ); ????//freopen( "3.out","w",stdout ); ????srand( time( NULL ) ); ????int?t,n = 10 ; ????while( n-- ) ????{ ???????????printf( "%d\n",rand() ); ???????????} ????return?0; }

產生隨機小數

#include<stdio.h> #include<stdlib.h> #include<string.h> #include<math.h> #include<time.h> int?main( ) { ????//freopen( "1.in","r",stdin ); ????//freopen( "3.out","w",stdout ); ????srand( time( NULL ) ); ????int?t,n = 10 ; ????while( n-- ) ????{ ???????????printf( "%.6lf\n",rand()*1.0 / 100 ); ???????????} ????return?0; }

產生任意范圍的數

#include<stdio.h> #include<stdlib.h> #include<string.h> #include<math.h> #include<time.h> int?main( ) { ????//freopen( "1.in","r",stdin ); ????freopen( "3.out","w",stdout ); ????srand( time( NULL ) ); ????int?t = 99,n = 10 ; ????while( n-- ) ????{ ???????????printf( "%d\n",rand() % t ); ???????????} ????return?0; }

產生字符串

#include<stdio.h> #include<stdlib.h> #include<string.h> #include<math.h> #include<time.h> int?main( ) { ????//freopen( "1.in","r",stdin ); ????freopen( "3.out","w",stdout ); ????srand( time( NULL ) ); ????int?t = 99,n = 10 ; ????while( n-- ) ????{ ???????????printf( "%c\n",rand() % 26 + 'A'?); ???????????} ????return?0; }

轉載于:https://www.cnblogs.com/lzq1126/p/5596850.html

總結

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