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#include #define State '\n' void main(){ int Juge=0;/*only one space*/ int c=0; while((c=getchar())!=EOF) { if(c==' '||c=='\t'||c=='\b') { if(Juge==1) { putchar(State); Juge=0; } } else ... 阅读全文
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#include #define DBS '\\'void main(){ int c; while((c=getchar())!=EOF) { if(c=='\t') { putchar(DBS); putchar('t'); } else if(c==' ') { putchar(DBS); putchar('b'); } else if(c=='\\') { ... 阅读全文
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#include void main(){ int c,c_BCN; while((c=getchar())!=EOF) { if(c!=' ') c_BCN=0; if(c==' ') ++c_BCN; if(c_BCN<=1) putchar(c); } printf("\n%d\n",c);}df ff f f fff d fg fggdf ff f f fff d fg fgg 阅读全文
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#include void main(){ int c; c=getchar(); while(c!=EOF) { putchar(c); c=getchar(); }}getchar() returns a distinctive value when there is no more input, a value that cannot be confused with any real character. This value is calledEOF, for ``end of file''.Q: The ty... 阅读全文
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$ ls -al drwxr-xr-x. 6 wjshan0808 wjshan0808 4096 Sep 11 21:51 .cache$ ls -liinode值 文件类型权限 连接计数 文件拥有者 文件群组 大小 修改日期 名称12976146 drwxr-xr-x. 2 wjshan0808 wjshan0808 4096 Sep 16 12:37 Desktop注:连接计数 - 2 = 本目录直接包含的子目录和文件的总和 阅读全文
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第一个字符段:文件类型。第二个组字符段又分为三段(每三个字符为一段不足用‘-’):文件属性。1. drwxrwxrwx 2. -rwxr-xr-x第一字符段: 第二字符组段依次为:- :普通文件 1.文件拥有者 2.文件所属的组群成员 3.其他用户d :目录 r:可读 w:可写 x:可执行l :链接b:块设备文件c:字符设备文件、p:管道文件s:套接文件 阅读全文
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1 user commands2 system calls3 library functions4 special files5 file formats6 games7 conventions and miscellany8 administration and privileged commands这些只能有root执行 阅读全文
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";" 用于在一行中输入多个命令,执行顺序=输入顺序。For instance:$ ls -a;cd Music 阅读全文
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printf is not part of the C language; there is no input or output defined in C itself.printf is just a useful function from the standard library of functions that are normally accessible to C programs.The behaviour of printf is defined in the ANSI standard,(美国国家标准协会 American National Standards Insti 阅读全文
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with each % indicating where one of the other (second, third, ...) arguments is to be substituted, and in what form itis to be printed. For instance, %d specifies an integer argumentaugment each %dFor Instanceprintf("%3d'F%6d'C\n",Fahrenheit,Celsius);to print the first number of ea 阅读全文
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The reason for multiplying by 5 and dividing by 9 instead of just multiplying by 5/9 is that in C, as in many otherlanguages, integer division truncates: any fractional part is discarded. Since 5 and 9 are integers. 5/9 would betruncated to zero and so all the Celsius temperatures would be reported 阅读全文
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The type int means that the variables listed are integers; by contrast with float, which means floating point,i.e., numbers that may have a fractional part. The range of both int and float depends on the machine you areusing; 16-bits ints, which lie between -32768 and +32767, are common, as are 32-b 阅读全文
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#include int main(){ printf("Hello World !\c"); return 0;}[10:40:36@wjshan0808 ~/Documents/C Program]$ gcc printf.cprintf.c:4:9: warning: unknown escape sequence '\c'[10:41:52@wjshan0808 ~/Documents/C Program]$ g++ printf.cprintf.c: In function ‘int main()’:printf.c:4: warning: unk 阅读全文
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The first line of the C program#include tells the compiler to include information about the standard input/output library. 阅读全文
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字体颜色值(ASCII)背景颜色值(ASCII)显示颜色3040黑色3141红色3242绿色3343黄色3444蓝色3545紫红色3646青蓝色3747白色符 号值特效取反0OFF1HighLight2半亮224UndeLine245Blink257反白278不可见注:若着色不对,哈哈,请认为我是色... 阅读全文