장용운 C과제 HW1
Write a program that reads a four digit integer and prints the sum of its digits as an output. ¶
//////////////////////////////
// C Programming Homework 1 //
//////////////////////////////
// //
// Problem Number : 1 //
// //
// Student ID : 20114924 //
// //
// Student Name : 장용운 //
// //
//////////////////////////////
#include <stdio.h>
#define fdn four_digit_num
int main(void) {
int fdn;
scanf("%d", &fdn);
// printf("The sum of four numbers : %d\n", (fdn/1000%10) + (fdn/100%10) + (fdn/10%10) + (fdn%10));
printf("The sum of four numbers : %d\n", (int)(fdn/1000) + (fdn/100%10) + (fdn/10%10) + (fdn%10));
return 0;
}
Write a C program that output as follows. ¶
Output :
*
***
*****
*******
*********
//////////////////////////////
// C Programming Homework 1 //
//////////////////////////////
// //
// Problem Number : 2 //
// //
// Student ID : 20114924 //
// //
// Student Name : 장용운 //
// //
//////////////////////////////
#include <stdio.h>
int main(void) {
int i, j;
for(i=0; i<5; i++) {
for(j=4; j>i; j--) {
printf(" ");
}
for(j=0; j<(i*2+1); j++) {
printf("*");
}
printf("\n");
}
return 0;
}
Write a program that gets a starting principal(A, 원금), annual interest rate(r, 연이율) from a keyboard (standard input) and print the total amount on deposit (예치기간이 지난 뒤 총금액, 원리합계) for the year(n) from 0 to 10. ¶
total deposit = A*(1+r)^n
For example,
1000.0 0.05 <- keyboard input // 5% should be written as 0.050 1000.00
1 1050.00
2 1102.50
3 1157.62
4 1215.51
5 1276.28
6 1340.10
7 1407.10
8 1477.46
9 1551.33
1 1050.00
2 1102.50
3 1157.62
4 1215.51
5 1276.28
6 1340.10
7 1407.10
8 1477.46
9 1551.33
10 1628.89
//////////////////////////////
// C Programming Homework 1 //
//////////////////////////////
// //
// Problem Number : 3 //
// //
// Student ID : 20114924 //
// //
// Student Name : 장용운 //
// //
//////////////////////////////
#include <stdio.h>
int main(void) {
int i;
float a, r;
scanf("%f %f", &a, &r);
r++;
for(i=0; i<=10; i++) {
printf("%5d %12.2f\n", i, a);
a *= r;
}
return 0;
}
