talkback.c

c04_string/talkback.c

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+/* talkback.c - 演示与用户交互 */
+#include <stdio.h>
+#include <string.h> // rkwastrlen()函数的原型
+
+#define DENSITY 62.4    // 人体密码（单位：磅/立方英尺）
+
+int main(void)
+{
+    float weight, volume;
+    int size, letters;
+    char name[40];  // name是一个可容纳40个字符的数组
+
+    printf("Hi! What's your name?\n");
+    scanf("%s", name);
+
+    printf("%s, what's your weight in pounds?\n", name);
+    scanf("%f", &weight);
+
+    size = sizeof(name);
+    letters = strlen(name);
+    volume = weight / DENSITY;
+    printf("Well, %s, your volume is %2.2f cubic feet.\n", name, volume);
+    printf("Also, your name has %d letters,\n", letters);
+    printf("and we have %d bytes to store if.\n", size);
+
+    return 0;
+}