090904c語言學習日記

#include<stdio.h> int put2(cnost char *string) { int count=0; while(*string) { putchar(*string++); count++; } putchar('/n'); return (count); } #include<stdio.h> void put1(const char*); int put2(const char*); int main(void) { put1("If I'd as much money"); put1("as I could spend./n"); printf("I count %d characters ./n", put2("I never would cry old chairs to mend."));//注意這裏 getch(); return 0; } void put1(const char *string) { while(*string) { putchar(*string++); } } int put2(const char *string) { int count=0; while(*string) { putchar(*string++); count++; } putchar('/n'); return (count); } //字符串交互 #include<stdio.h> #define MSG "You must have many talents.Tell me some." #define LIM 5 #define LINELEN 81 int main(void) { char name[LINELEN]; char talents[LINELEN]; int i; const char m1[40]="Linmit yourself ti one line's worth."; const char m2[]="If you can't think of anything.fake it."; const char *m3="/nEnough about me-what's your name"; const char *mytal[LIM]={"Adding numbers swiftly", " Multiplying accurately","Stashing ", "Following instructions to the letter", "Understanding the c language"}; printf("Hi,I'm Clyde the Computer/n"); puts("What were they?Ah,yes,here's a partial list"); for(i=0;i<LIM;i++) puts(mytal[i]); printf("Let me tell you some of them./n"); puts(m3); gets(name); printf("Well,%s,%s/n",name,MSG); printf("%s%s/n",m1,m2); gets(talents); puts("Let me see if I've got that list/n"); puts(talents); printf("Thanks for the infoemation .%s/n"); return 0; }

#include<stdio.h> int main(void) { char *mesg="Don't be a fool!"; char *copy; copy=mesg; printf("%s/n",copy); printf("/nmesg=%s;&mesg=%p,value=%p/n",mesg,&mesg,mesg); printf("copy=%s,©=%p,value=%p/n",copy,©,copy); getch(); return 0; }

#include<stdio.h> #define MAX 81 int main(void) { char name[MAX]; printf("Hi,what's your name?/n"); gets(name); printf("Nice name.%s/n",name); getch(); return 0; }

#include<stdio.h> #define MAX 81 int main(void) { char name[MAX]; char *p; printf("Hi,what's your name?/n"); p=gets(name); printf("%s?Ah! %s/n",name,p); getch(); return 0; }

 

#include<stdio.h> #define MAX 81 int main(void) { char name[MAX]; char *p; printf("Hi,what's your name?/n"); p=fgets(name,MAX,stdin);//fgets會讀取換行符，並且會檢查輸入數據的長度，比較安全，防止溢出 。 printf("%s?Ah! %s/n",name,p); getch(); return 0; }

#include<stdio.h> #define DEF "I am a #defined string." int main(void) { char str1[80]="An array was initialized to me."; const char *str2="A pointer was initialized to me."; puts(" I'm an argument to puts()."); puts(DEF);//puts必須遇到空字符才停下來 puts(str1); puts(str2); puts(&str1[5]); puts(&str1[5]); puts(str2+4); getch(); return 0; }

#include<stdio.h>//自定義輸入輸出函數
void put1(const *string)
{
     while(*string !='/0')
     {
                   putchar(*string++);
     }
}
#include<stdio.h>//自定義輸入輸出函數
void put1(const *string)
{
     while(*string)
     {
                   putchar(*string++);
     }
}