Null-terminating a string in C -
i have string spaces on end. terminate string @ position when first space occurs, when later strncpy() on it, copy part of string doesn't contain spaces. this try gives me segault obviously. how can intend do? int main() { char* s1 = "somestring "; *(s1 + 10)='\0'; printf("%s\n",s1); return 0; } you're attempting modify string read because of way declared pointing constant value. you'll have make copy first: #include <stdio.h> #include <string.h> int main() { char* s1 = "somestring "; char *s2 = strdup(s1); char *s3 = strchr(s2, ' '); *s3 = '\0'; printf("%s\n",s2); /* if not needed more, because strdup allocates heap memory */ free(s2); return 0; }
