DseWiki: MarkusRechberger/CErrors

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irc#c

[[Code]
Problem:
01:06 < alt_don> having problems getting the syntax down
01:07 < alt_don> it compiles fine with gcc -Wall
01:07 < alt_don> but does not work as I intend it to
01:10 < alt_don> I am new to C so I don't see my mistake
]

[[Code]
#include <stdio.h>

char user_input[128];
int term1;
int term2;
int term4;

int main(int argc, char *argv[])

{
printf("please enter two values here: ");

fgets(user_input, sizeof(user_input), stdin);
sscanf(user_input, "%d %d", &term1, &term2);

if (argc < 2)

printf("you need to input at least two characters here\n");

else

term4 = term1 + term2;
printf("%d", term4);

return (0);
}
]

don't correct it .. just think about it :-) this is a nice one

[[Code]
#include <stdio.h>
#include <string.h>

int main(){
char *string=0;
printf("%d",strlen(string));
return(0);
}
]

strlen is not NULL pointer safe

irc#c

Problem: 01:06 < alt_don> having problems getting the syntax down 01:07 < alt_don> it compiles fine with gcc -Wall 01:07 < alt_don> but does not work as I intend it to 01:10 < alt_don> I am new to C so I don't see my mistake

#include <stdio.h> char user_input[128]; int term1; int term2; int term4; int main(int argc, char *argv[]) { printf("please enter two values here: "); fgets(user_input, sizeof(user_input), stdin); sscanf(user_input, "%d %d", &term1, &term2); if (argc < 2) printf("you need to input at least two characters here\n"); else term4 = term1 + term2; printf("%d", term4); return (0); }

don't correct it .. just think about it :-) this is a nice one

#include <stdio.h> #include <string.h> int main(){ char *string=0; printf("%d",strlen(string)); return(0); }

strlen is not NULL pointer safe