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RSS订阅原创 例7.4
int main(){ float add(float x,float y);float a,b,c;printf("Please enter a and b:");scanf("%f,%f",&a,&b);c=add(a,b);printf("sum is %f\n",c);return 0;}float add(f
2019-02-02 11:27:59
267
原创 例7.3
int main(){ int max(float x,float y);float a,b;int c;scanf("%f,%f,",&a,&b);c=max(a,b);printf("max is%d\n",c);return 0;}int max(float x,float y){ float z
2019-02-02 11:27:21
213
原创 例7.2
{ int z;z=x>y? x:y;return(z);}#include<stdio.h>int main(){ int max(int x,int y);int a,b,c;printf("please enter two integer numbers:");scanf("%d,%d",&a,&a
2019-02-02 11:26:52
192
原创 例7.1
int main(){ void print_star();void print_message();print_star();print_message();print_star();return 0;}void print_star(){printf("******************\n");}void print_message(){printf("How d...
2019-02-02 11:26:22
203
原创 例6.9
#include<string.h>int main(){char str[3][20];char string[20];int i;for(i=0;i<3;i++)gets(str[i]);if(strcmp(str[0],str[1])>0)strcpy(string,str[0]);elsestrcpy(string,str[1]);if(str...
2019-02-01 11:12:02
144
原创 例6.8
int main(){char string[81];int i,num=0,word=0;char c;gets(strong);for(i=0;(c=string[i])!='\0';i++)if(c==' ')word=0;else if(word==0){word=1;num++;}printf(")There are %d words in this line.\n"...
2019-02-01 11:03:10
179
原创 例6.7
int main(){char diamond[][5]={{' ',' ','*'},{' ','*',' ','*'},{'*',' ',' ',' ','*'},{' ','*',' ','*'},{' ',' ','*'}};int i,j;for(i=0;i<5;i++){for(j=0;j<5;j++)printf("%c",diamond[i][j]);pri...
2019-02-01 10:51:39
368
原创 例6.6
int main(){char c[15]={'I',' ','a','m',' ','a',' ','s','t','u','d','e','n','t','.'};int i;for(i=0;i<15;i++)printf("%c",c[i]);printf("\n");return 0;}
2019-02-01 10:41:02
233
原创 例6.5
int main(){int i,j,row=0,colum=0,max;inta[3][4]={{1,2,3,4},{9,8,7,6},{-10,10,-5.2}};max=a[0][0];for(i=0;i<=2,i++)for(j=0;i<=3,j++)if(a[i][j]>max){max=a[i][j];row=i;colum=j;}return ...
2019-02-01 10:34:55
197
原创 例6.4
int main(){ int a[2][3]={{1,2,3},{4,5,6}};int b[3][2],i,j;printf("array a:\n");for(i=0;i<=1;i++){for(j=0;j<=2;j++){ printf("%5d",a[i][j]); b[j][i]=a[i][j];}printf("\n");}printf("arr...
2019-02-01 10:11:50
219
原创 例6.3
int main(){ int a[10];int i,j,t;printf("input 10 numbers:\n");for(i=0;i<10;i++)scanf("%d",&a[i]);printf("\n");for(j=0;j<9;j++)for(i=0;i<9-j;i++)if(a[i]>a[i+1]){t=a[i];a[i]=a[...
2019-02-01 09:59:09
327
原创 例6.2
int main(){ int i;int f[20]={1,1};for(i=2;i<20;i++)f[i]=f[i-2]+f[i-1];for(i=0;i<20;i++){if(i%5==0)printf("\n");printf("%12d",f[i]);}printf("\n");return 0;}
2019-02-01 09:49:20
183
原创 例6.1
int main(){ int i,a[10];for(i=0;i<=9;i++)a[i]=i;for(i=9;i>=0;i--)printf("%d",a[i]);printf("\n");return 0;}
2019-02-01 09:44:41
193
原创 例5.11
int main(){ char c;c=getchar();while(c!='\n'){if((c>='a'&&c<='z')||(c>='A'&&c<='Z')){if(c>='W'&&c<='Z'||c>='W'&&c<='z')c=c-22;else
2019-02-01 09:36:35
144
原创 例5.10
#include<math.h>int main(){ int n,k,i,m=0;for(n=101;n<=200;n=n+2){k=sqrt(n);for(i=2;i<=k;i++)if(n%i==0)break;if(i>=k+1){printf("%d",n);m=m+1;}if(m%10==0)printf("\n");}print...
2019-01-31 16:37:31
169
原创 例5.9
int main(){ int n,i;printf("please enter a integer number,n=?");scanf("%d",&n);for(i=2;i<n;i++)if(n%i==0)break;if(i<n)printf("%d is not a prime number.\n",n);else printf("%d is a prim...
2019-01-31 16:24:56
154
原创 例5.8
int main(){ int f1=1,f2=1;int i;for(i=1;i<=20;i++){ printf("%12d%12d",f1,f2);if(i%2==0)printf("\n");f1=f1+f2;f2=f2+f1;}return 0;}
2019-01-31 11:42:16
154
原创 例5.7
# include<math.h>int main(){int sign=1;double pi=0.0,n=1.0,term=1.0;while(fabs(term)>=1e-6){pi=pi+term;n=n+2;sign=-sign;term=sign/n;}pi=pi*4;printf("pi=%10.8f\n",pi);return 0;}...
2019-01-31 11:34:50
173
原创 例5.6
int main(){ int i,j,n=0;for(i=1;i<=4;i++)for(j=1;j<=5;j++,n++){if(n%5==0)printf("\n");printf("%d\t",i*j);}printf("%\n");return 0;}
2019-01-31 11:25:34
198
原创 例5.5
int main(){int n;for(n=100;n<=200;n++){if(n%3==0)continue;printf("%d",n);}printf("\n");return 0;}
2019-01-31 11:19:32
137
原创 例5.4
#define SUM 100000int main(){ float amount,aver,total;int i;for(i=1,total=0;i<=1000;i++){printf("please enter amount:");scanf("%f",&amount);total=total+amount;if(total>=SUM)break;}...
2019-01-31 11:13:53
290
原创 例5.3
int main(){ int i,sum=0;printf("please enter i,i=?");scanf("%d",&amp;i);while(i&lt;=10){sum=sum+i;i++;}printf("sum=%d\n",sum);return 0;}
2019-01-31 11:00:16
157
原创 例5.2
int main(){ int i=1,sum=0;do{ sum=sum+i;i++;}while(i<=100);printf("sum=%d\n",sum);return 0;}
2019-01-31 10:48:41
252
原创 例5.1
int main(){ int i=1,sum=0;while(i<=100){sum=sum+i;i++;}printf("sum=%d\n",sum);return 0;}
2019-01-31 10:47:39
371
原创 例4.10
int main(){ int c,s;float p,w,d,f;printf("please enter price,weight,discount:");scanf("%f,%f,%d",&p,&w,&s);if(s>=3000)c=12;else c=s/250;switch(c){ case 0: d=0;break;c...
2019-01-29 18:22:41
114
原创 例4.9
#include<math.h>int main(){ double a,b,c,disc,x1,x2,realpart,imagpart;scanf("%if,%if,%if",&a,&b,&c);printf("The equation");if(fabs(a)<=1e-6)printf("is not a quadratic\n");e..
2019-01-29 18:02:49
167
原创 例4.8
int main(){ int year,leap;printf("enter year:");scanf("%d",&year);if(year%4==0){if(year%100==0){if(year%400==0)leap=1;elseleap=0;}elseleap=1;}elseleap=0;if(leap)printf("%d is",year...
2019-01-29 17:45:31
157
原创 例4.7
# include<stdio.h>int main(){ void action1(int,int),action2(int,int);char ch; int a=15,b=23; ch=getchar(); switch(ch) {case'a':case'A':action1(a,b);break;case'b':case'B':action2(...
2019-01-29 17:31:16
184
原创 例4.6
int main(){ char grade;scanf("%c",&grade);printf("Your score:");switch(grade){case'A':printf("85~100\n");break;case'B':printf("70~84\n");break;case'C':printf("60~69\n");break;case'D':print..
2019-01-29 17:24:30
212
原创 例4.5
int main(){int x,y;scanf("%d",&x);if(x<0)y=-1;elseif(x==0) y=0;else y=1;printf("x=%d,y=%d\n",x,y);return 0;}
2019-01-29 16:57:07
228
原创 例4.4
int main(){char ch;scanf("%c",&amp;ch);ch=(ch&gt;='A'&amp;&amp;ch&lt;='Z')?(ch+32):ch;printf("%c\n"ch);return 0;}
2019-01-29 16:54:48
117
原创 例4.3
int main(){float a,b,t;scanf("%f,%f,%f",&a,&b,&c);if(a>b){t=a; a=b; b=t;}if(a>c){t=a;a=c;c=t;}if(b>c){t=b;b=c;c=t;}printf("%5.2f,%5.2f,%5.2f\n",a,b,c);return 0;}...
2019-01-29 16:43:02
116
原创 例4.2
int main(){float a,b,t;scanf("%f,%f",&a,&b);if(a>b){//将a与b的值互换 t=a; a=b; b=t;}printf("%5.0f,%5.2f\n",a,b);return 0;}
2019-01-29 16:34:17
133
原创 例4.1
#include<math.h>int main(){double a,b,c,disc,x1,x2,p,q;scanf("%if%if%if",&a,&b,&c);disc=b*b-4*a*c;if(disc<0)printf("This equation hasn't real roots\n");else{ p=-b/(2.0*a);...
2019-01-29 16:32:18
155
原创 例3.10
int main(){char c1,c2;c1=getchar();c2=c1+32;putchar(c2);putchar('\n');return 0;}
2019-01-27 19:52:33
117
原创 例3.9
int main(){char c1,c2;c1=getchar();c2=c1+32;putchar(c2);putchar('\n');return 0;}
2019-01-27 19:43:51
165
原创 例3.8
int main(){char a='B',b='O',c='Y';putchar(a);putchar(b);putchar(c);putchar('\n');return 0;}
2019-01-27 19:36:34
185
原创 例3.5
#include<stdio.h>int main(){double a,b,c,disc,x1,x2,p,q;scanf("%lf%lf%lf",&a,&b,&c);disc=b*b-4*a*c;p=-b/(2.0*a);q=sqrt(disc)/(2.0*a);x1=p+q;x2=p-q;printf("x1=%7.2f\nx2=%7.2f\...
2019-01-25 11:47:16
186
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