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printf("n_s=%d\n",n);
getch();
}
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{ int i;
printf("n_x=%d\n",n); /*
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*/
for(i=n-1; i>=1; i--) n=n+i; /*?M??￥′
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printf("n_x=%d\n",n); /*
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int i;
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printf("%d\n",f2(N,K));
getch();
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main()
{ int n;
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printf("input a inteager number:\n");
scanf("%d",&n);
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printf("%d!=%ld\n",n,y);
getch();
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main()
{ int i,num=0;
char str[255];
printf("Input a string,");
gets(str);
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puts(str);
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getch();
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int i
printf("\ninput 5 scores:\n")
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main()
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