5: error: 'default' statement not in switch statement default: ^test.c:45:17: error: use of undeclared identifier 'number' scanf("%d", number); ^test.c:48:17: error: use of undeclared identifier 'x' scanf("%d", x); ^test.c:56:33: warning: format ...
^test.c:48:17: error: use of undeclared identifier 'x' scanf("%d", x); ^test.c:56:33: warning: format specifies type 'int' but the argument has type 'double' [-Wformat] printf("圆周长为:%d\n", C); ~~ ^ %ftest.c:64:33: warning: format specifi...
Source Code: Switch Case Default In C Programming Language view plaincopy to clipboardprint? #include<stdio.h> int main() { char choice; printf("Enter your choice\n"); scanf("%c", &choice); switch(choice) { case 'a': case 'A': printf("You typed A or a\n"); br...
printf( user_name ); /* Danger! If user_name contains "%s", program will crash */ Instead, do this: printf( "%s", user_name ); Note In Visual Studio 2015 Theprintfandscanffamily of functions were declared asinlineand moved to the<stdio.h>and<conio.h>headers. If you are migrating...
In a basic calculator program, users can choose an operation by entering a number, and the program responds accordingly: int choice; printf("Select operation:\n1. Addition\n2. Subtraction\n3. Multiplication\n4. Division\n"); scanf("%d", &choice); switch (choice) { case 1: // Perform ...
pstudents++;}}//少了括号void main(){ struct student ostu;struct student students[5];int i,m;//少了分号,m没定义printf("please input 5students and there score\n");printf("name num math english chinese");for(i=0;i<5;i++){scanf("%s %s %f %f %f",students[i].name,...
C Program </> Copy #include<stdio.h>voidmain(){inta;printf("Enter Number : ");scanf("%d",&a);if(a%2==0){printf("You entered an even number");}else{printf("You entered an odd number");}} Here the condition isa%2 == 0. It is a boolean expression formed using comparison op...
12 { 13 printf("Enter value of n to read last ‘n’ characters"); 14 scanf("%d",&n); 15 fseek(fp,-n,2); 16 while((ch=fgetc(fp))!=EOF) 17 { 18 printf("%c\t",ch); 19 } 20 } 21 fclose(fp); 22 getch(); 23 }OUTPUT: It depends on the content in the file. Prev...
7.9.3: the printf and scanf functions of C's stdio I/O library. In C, printf can be declared as follows: int printf(char *format, …) {… The ellipsis (…) in the function header is a part of the language syntax. It indicates that there are additional parameters following the ...
代码 1. 2. 3. #include<cstdio> int main() { int a,b; while(scanf("%d%d",&a,&b)!=EOF) printf("%d\n",a+b); return 0; } 1. 2. 3. 4. 5. 6. 7. 代码 1. 2. 3. 4. #include<cstdio>intmain(){inta,b;while(scanf("%d%d",&a,&b)!=EOF)printf("%d\n",a+b...