, . length size, width wide, fnum num. : float, int .
area() - . area() area.
:
area(width, length, fnum);width size, length wide. - , . , , , . , :
area(fnum, width, length);fnum wide, width size, num length. , , . , .
, 6. : (cost) (discount). cost discount price() amount mrkdown. reduce net price() .
6. .
/*discount.c*/main() { floatcost, discount; printf(" : "); scanf("%f", &cost); printf(" ( ): "); scanf("%f", &discount); price(cost, discount); }price(amount, mrkdown)float amount, mrkdown; { float reduced, net; reduced = amount * mrkdown; net = amount - reduced; printf(" %.2f ", net); return (0); }price() , . :
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, :
price(discount, cost);, float float. , , : discount amount, cost mrkdown.
cost 100, discount 0.05, , , 10000 . , 4.95, 95.50.
, . , getchar(), :
key = getchar();getchar(), . key. .
, . , . :
main() { charletter; letter = getlet(); putchar('\n'); printf(" %c", letter); } chargetlet() { printf(" : "); return(getchar()); } letter = getlet();getlet(). letter main().
, .
chargetlet();, , getlet(), . , , return(). ,
return(getchar());. , getchar() , . getchar() , return() printf() , letter, main().
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. 7. ,
return() . , , return() getchar().
, , . , .7, , .
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, square() num. return() .
return(num * num)num * num, number, square() main().
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