By GokiSoft.com|
14:15 24/11/2021|
Lập Trình C
[Video] Tìm hiểu mệnh đề điều kiên if else & switch trong C - Khóa học lập trình C
#include <stdio.h>
#include <stdlib.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */
int main(int argc, char *argv[]) {
//Phan 1: Nhap du lieu -> tim hieu kien thuc bo sung
/**
int x, y;
printf("\nNhap x = ");
scanf("%d", &x);
printf("\nNhap y = ");
scanf("%d", &y);
printf("\nx = %d, y = %d", x, y);
printf("\nNhap x, y: ");
scanf("%d%d", &x, &y);//Luu ->%d%d -> ko dc chua bat ky ky tu nao khac -> ngoai %d, %f, %c, %s
printf("\nx = %d, y = %d", x, y);
//Tim hieu cach nhap ky tu bang cach moi
char c;
printf("\nNhap c = ");
//scanf("%c", &c);
fflush(stdin); fflush(stdout);
c = getchar();
//printf("\nc = %c", c);
printf("\nC = ");
putchar(c);
char s[20];
printf("\nNhap s = ");
fflush(stdin); fflush(stdout);
gets(s);
puts(s);
*/
//Phan 2: Menh de dieu kien if else
//Step 1
/**int num;
printf("\nNhap num = ");
scanf("%d", &num);
int r = num % 2;
if(r == 0) {
//Dieu kien: neu r = 0 -> Dung -> xu ly khoi code day.
printf("\nNumber is even");
}
*/
//Step 2
/**int num;
printf("\nNhap num = ");
scanf("%d", &num);
int r = num % 2;
if(r == 0) {
//Dieu kien: neu r = 0 -> Dung -> xu ly khoi code day.
printf("\nNumber is even");
printf("\nNumber is even");
printf("\nNumber is even");
} else {
//Dieu kien: r != 0 -> Hien thi noi dung duoi day
printf("\nNumber is odd");
printf("\nNumber is odd");
printf("\nNumber is odd");
printf("\nNumber is odd");
printf("\nNumber is odd");
printf("\nNumber is odd");
}*/
//Step 3
int yearWithUs, bizDone;
printf("\nNhap yearWithUs, bizDone: ");
scanf("%d%d", &yearWithUs, &bizDone);
if(yearWithUs >= 10) {
//Dieu kien dung
if(bizDone > 5000000) {
printf("\nClassified as an MVS");
} else {
printf("\nA Little more effort required");
}
} else {
//Dieu kien sai
printf("\nA Little more effort required");
}
//Nang cao 1 chut
if(yearWithUs >= 10 && bizDone > 5000000) {
printf("\nClassified as an MVS");
} else {
printf("\nA Little more effort required");
}
if(yearWithUs >= 10) {
//Dieu kien dung
if(bizDone > 5000000) {
printf("\nClassified as an MVS");
} else {
printf("\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
}
} else {
//Dieu kien sai
printf("\nA Little more effort required");
}
if(yearWithUs >= 10 && bizDone > 5000000) {
printf("\nClassified as an MVS");
} else if(yearWithUs >= 10) {
printf("\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
} else {
printf("\nA Little more effort required");
}
//Step 4: Switch
char c;
printf("\nNhap c = ");
fflush(stdin);fflush(stdout);
scanf("%c", &c);
if(c == 'A') {
printf("\nHello A");
} else if(c == 'B') {
printf("\nHello B");
} else if(c == 'C') {
printf("\nHello C");
} else {
printf("\nGoodbye!!!");
}
//TH: c -> int, char -> co the su dung cach sau
switch(c) {
case 'A':
printf("\nHello A");
// break;//Luu y: phai co break
case 'B':
printf("\nHello B");
break;//Luu y: phai co break
case 'C':
printf("\nHello C");
break;//Luu y: phai co break
default:
printf("\nGoodbye!!!");
break;//Luu y: phai co break
}
return 0;
}
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