#include<stdio.h> #include<conio.h> main() { int i,j=0,k,s=0; printf("enter a number:"); scanf("%d",&k); for(i=1;i<=k;i++) { s=s+i; printf("%d",s); j++; } }
#include<stdio.h>
main()
{
int n,i,j,sign=1;
float fac,sum;
printf("please input value of n:");
scanf("%d",&n);
sum=0.0;
for(i=1;i<=n;i++)
{
fac=1.0;
for(j=1;j<=2*i-1;j=j+1)
{
fac=fac*j;
}
fac=fac*sign;
sum=sum+fac;
sign=-sign;
}
printf("sum=%.0f\n",sum);
}
1 #include<conio.h> 2 #include<stdio.h> 3 main() 4 { 5 float x,max,min; 6 printf("please input scores:"); 7 scanf("%f",&x); 8 max=min=x; 9 while(x>0) 10 { 11 if(x>max) max=x; 12 if(x<min) min=x; 13 scanf("%f",&x); 14 } 15 printf("\nmax=%f\nmin=%f\n",max,min); 16 }
#include<stdio.h> main() { int x,y,z; int k=100; while(k<=999) { x=k/100; y=(k/10)%10; z=k%10; if (k==x*x*x+y*y*y+z*z*z) printf("%d\n",k); k++; } }
#include<stdio.h> main() { float sum,value; int n; printf("input value:"); scanf("%f",&value); sum=0.0; n=0; do { ++n; sum+=1.0/(float)n; } while(sum<value); printf("n=%d",n); }
#include<stdio.h>
main()
{
char c;
int k,data;
data=0;
for(k=0;k<4;k++)
{
while(1)
{
c=getchar();
if(c>=‘0‘&&c<=‘9‘)
break;
}
data+=(c-‘0‘)*1000;
data+=(c-‘0‘)*100;
data+=(c-‘0‘)*10;
data+=(c-‘0‘)*1;
}
printf("data=%d",data);
}
#include<stdio.h>
maihn()
{
int m,n,k;
int sum=0;
printf("gezhongtuofa:\n");
for(m=1;m<=100;m++)
for(n=1;n<=100-m;n++)
{
k=100-m-n
if( (k%2==0)&&(3*m+2*n+k*0.5==100))
{
printf("´óÂí%3dÆ¥;ÖÐÂí%3dÆ¥£»Ð¡Âí%3dÆ¥¡£\n",m,n,k);
sum++;
}
}
printf("¹²ÓÐ%dÖÖ\n",sum);
}
#include <stdio.h> main() { int a,b,c,d,i,sum=0; for(a=1;a<=26;a++) for(d=1;d<=26;d++) { b=4*a+6*d; if(b!=26) continue; else { c=a*(a+d)*(a+2*d)*(a+3*d); if(c!=880) continue; else for(i=0;i<6;i++) { printf("%d,",a+i*d); sum=sum+(a+i*d); } } } printf("\n数列的前六项的和: %d\n",sum); }
#include <stdio.h> main() { int x,y,z,sum; sum; for(x=1;x<30;x++) { for(y=1;y<30;y++) { z=30-x-y; if((z!=0)&&(3*x+2*y+z==50)) {printf("大学生%3d\t中学生%3d\t小学生%3d\n",x,y,z); sum=sum+1; } else continue; } } printf("sum=sum=%d\n",sum); }
原文：https://www.cnblogs.com/wu18151783/p/10751149.html