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#include <stdio.h>
 
int main()
{
int usd,krw,exchange;
printf("달러($) 금액을 입력하세요:");
scanf_s("%d",&usd);
printf("환율을 입력하세요:");
scanf_s("%f",&exchange);
krw=usd*exchange;
printf("1000달러($)는%d*%f(\)입니다",usd,exchange);
}
 

prog.c: In function ‘main’:
prog.c:7:1: warning: implicit declaration of function ‘scanf_s’ [-Wimplicit-function-declaration]
 scanf_s("%d",&usd);
 ^~~~~~~
prog.c:11:8: warning: unknown escape sequence: '\)'
 printf("1000달러($)는%d*%f(\)입니다",usd,exchange);
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.c:11:29: warning: format ‘%f’ expects argument of type ‘double’, but argument 3 has type ‘int’ [-Wformat=]
 printf("1000달러($)는%d*%f(\)입니다",usd,exchange);
                             ^
prog.c:5:9: warning: variable ‘krw’ set but not used [-Wunused-but-set-variable]
 int usd,krw,exchange;
         ^~~
/home/Qwvlyg/cczYKC0Y.o: In function `main':
prog.c:(.text.startup+0x21): undefined reference to `scanf_s'
prog.c:(.text.startup+0x42): undefined reference to `scanf_s'
collect2: error: ld returned 1 exit status

Standard output is empty