學習筆記(09):C語言入門到精通-char類型

立即學習:https://edu.csdn.net/course/play/10534/378125?utm_source=blogtoedu

學習目標：

1. char類型是什麼？

2. char的基本用途。

 

示例代碼1：

#include <stdio.h>

int main() {
    char x = '\0';
    int diff = 'a' - 'A';

    printf("please input a char: ");
    scanf("%c", &x);

    if (x >= 'A' && x <= 'Z') {
        printf("%c\n", x + diff);
    } else if (x >= 'a' && x <= 'z') {
      printf("%c\n", x - diff);

    } else {
        printf("%c\n", x);
    }

    return 0;
}

 

實例代碼2：

#include <stdio.h>

int main() {
    unsigned int score = 0;
    char grade = '\0';

    printf("please input your score: ");
    scanf("%d", &score);

    if (score >= 90) {
        grade = 'A';
    } else if (score >= 60) {
        grade = 'B';
    } else {
    grade = 'C';
    }

    printf("%c\n", grade);

    return 0;
}