   After fgets get line, how can I search detail in line?
  For example:I have a text file.I want to count the space in line 2========================a a a aa  a a a b b bb b b b    (line 2)c c c cc  c c ========================char s[256];FILE* fp;fp = fopen("test.txt", "r");while(fgets(s,sizeof(s), fp){ if(s[0] == 'b') {    (fgets(s,sizeof(s), fp);   printf("%s", s); // I will get b b bb b b b  //I want to count space here, I tried to use s and loop for but it doesn't work }}
Quote:Original post by fantasyme  //I want to count space here, I tried to use s and loop for but it doesn't workMaybe show what you tried and we can suggest modifications?   ;  strtok is useful for counting or splitting a string at a certain character.sprintf is useful to parse a string into multiple variable types.But as other will probably say, this is old C and you should use the C++ way with std, will be easier.   ;  I'm trying to compile your code right now, it would have been faster if you put it inside a main w/ all of the headers, just so everyone doesn't have to do it for you...Your "while(fgets(s,sizeof(s), fp)" is missing a ")".  Your "(fgets(s,sizeof(s), fp);" has an extra "(".  How'd you get this code to compile?   ;  sorry, it is not the full code.Actually,I want to take the vector's detail in .x file.I can get the detail in "char" using fgets() to get the detail by line.I just want to know some idea to do it.for example:-1222;1223332;33403032; // all type charI want to get the number in type of int.I still stuck on how to get the detail in line.I used for loop like...for(int i = 0; s != ';';i++)columnNum++;but s !=';' is not work.the program didn't find and compare what I want ';'