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1.±N¥H¤Ufor°j°é§ï¦¨while°j°é
#include<stdio.h>
#include<stdlib.h>
int main()
{
int n,i;
long sum=0;/* «Å§i¬°ªø¾ã¼Æ */
printf("½Ð¿é¤J¥ô¤@¾ã¼Æ:");
scanf("%d",&n);
if(n>=1 || n<=100)/* ±±¨î¿é¤J½d³ò */
{
for(i=0;i<n;i++)
sum+=i*i; /* 1*1+2*2+3*3+..n*n */
printf("1*1+2*2+3*3+...+%d*%d=%d\n",n,n,sum);
}
else
printf("¿é¤J¼Æ¦r¶W¥X½d³ò¤F!\n");
system("pause");
return 0;
}
2.±N¥H¤Uswitch«ü¥O§ï¦¨if else if«ü¥O
#include <stdio.h>
#include <stdlib.h>
int main()
{
char select;
puts(" (1) ±Æ°©«K·í");
puts(" (2) ®üÂA«K·í");
puts(" (3) Âû»L«K·í");
puts(" (4) ³½±Æ«K·í");
printf(" ½Ð¿é¤J±znÁʶRªº«K·í¡G");
select=getche();/*¿é¤J¦r¤¸¨Ã¦s¤JÅܼÆselect*/
printf("\n===================================\n");
switch(select)
{
case '1': /*¦pªGselectµ¥©ó1*/
puts("±Æ°©«K·í¤@¥÷75¤¸");
break; /*¸õ¥Xswitch*/
case '2': /*¦pªGselectµ¥©ó2*/
puts("®üÂA«K·í¤@¥÷85¤¸");
break; /*¸õ¥Xswitch*/
case '3': /*¦pªGselectµ¥©ó3*/
puts("Âû»L«K·í¤@¥÷80¤¸");
break; /*¸õ¥Xswitch*/
case '4': /*¦pªGselectµ¥©ó3*/
puts("³½±Æ«K·í¤@¥÷60¤¸");
break; /*¸õ¥Xswitch*/
default: /*¦pªGselect¤£µ¥©ó1,2,3,4¥ô¦ó¤@Ó*/
printf("¿ï¶µ¿ù»~\n");
}
printf("===================================\n");
system("pause");
return 0;
} |
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¥»©«³Ì«á¥Ñ msmplay ©ó 2016-10-30 12:19 ½s¿è
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