第四章编程练习
第一题 #include<stdio.h> int main() { char name[40]; char surname[40]; printf("Please input your first name:"); scanf("%s",name); printf("Please input your last name:"); scanf("%s",surname); printf("%s,%s",name,surname); return 0; } 第二题 #include<stdio.h> #include<string.h> int main() { char name[40]; int width; printf("Please input your name:"); scanf("%s",name); width=strlen(name); printf("\"%s\"\n",name); printf("\"%20s\"\n",name); printf("\"%-20s\"\n",name); printf("\"%*s\"",(width+3),name); return 0; } 第三题 #include<stdio.h> int main() { float input; printf("Enter a float number:"); scanf("%f"