C program

EMPS intranet

Hi! Hi! Start program

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Value and type of last evaluated expression: Address of array element: Address of array elementx: (none)

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Code

 Header...
 int main(int argc,char *argv[]){

»  if (argc>=0) 
    printf("Welcome to \"%s\"\n", argv0);

»  for ( int i=1;i<argc; ++i) {
»    float val;
»    printf("Argument %d: \"%s\"\n", i, argvi);
»    if (sscanf(argvi, "%g", &val)>0) 
      printf("\tthe value is %g\n", val);
  }

»  return 0;
}
 ...

Memory

main()
				132	133	134	135
				argv = 604
184	185	186	187
argc = 5

main(): for()
				140	141	142	143
				i = 1
main(): for() {...}
144	145	146	147
val = 1234567.75
main(): for() {...}
144	145	146	147
val = -nan
main(): for() {...}
144	145	146	147
val = -nan
main(): for() {...}
144	145	146	147
val = 21

				604	605	606	607
				argv[0] = 8165
608	609	610	611	612	613	614	615
argv[1] = 8172				argv[2] = 8178
616	617	618	619	620	621	622	623
argv[3] = 8181				argv[4] = 8191
8160	8161	8162	8163	8164	8165	8166	8167
?	?	?	?	?	'0'	' '	'C'
8168	8169	8170	8171	8172	8173	8174	8175
'S'	'_'	'A'	'R'	'R'	'A'	'Y'	'_'
8176	8177	8178	8179	8180	8181	8182	8183
'c'	'h'	'a'	'r'	'['	'6'	']'	' '
8184	8185	8186	8187	8188	8189	8190	8191
' '	'4'	'2'	'9'	'3'	'0'	'5'	'3'
8192	8193	8194	8195	8196	8197	8198	8199
'6'	'6'	'8'	' '	' '	'4'	'2'	'9'

NB: the actual memory address of each variable is the
address shown plus 4293045496 (0xFFE2ACF8).

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Show output (Before looking at the output, work out what you think it put should be and see if you are right.)

Output

Welcome to "./main"
Argument 1: "hello"
Argument 2: "21"
	the value is 21
Argument 3: "1234567.7"
	the value is 1.23457e+06
Argument 4: "world"

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Code

main()

main(): for()

main(): for() {...}

main(): for() {...}

main(): for() {...}

main(): for() {...}

Output