C言語関数解説1

C言語関数解説1

01printf 02scanf 03putchar 04getchar 05puts 06gets 07fgets 08fputs 09fprintf 10fscanf 11sprintf 12sscanf 13fopen 14fclose 15fread 16fwrite 17fseek 18ftell 19rewind 20fflush 21perror 22feof 23ferror 24clearerr 25fileno 26setbuf 27setvbuf 28tmpfile 29tmpnam 30remove 31rename 32chmod 33chdir 34mkdir 35rmdir 36malloc 37calloc 38realloc 39free 40memcpy 41memmove 42memset 43memcmp 44memchr 45strcpy 46strncpy 47strcat 48strncat 49strcmp 50strncmp 51strchr 52strrchr 53strstr 54strtok 55strpbrk 56strspn 57strcspn 58strdup 59strlen 60strrev 61atoi 62atof 63atol 64atoll 65strtol 66strtoll 67strtoul 68strtoull 69strtod 70strtof 71strtold 72rand 73srand 74abs 75labs 76llabs 77div 78ldiv 79lldiv 80qsort 81bsearch 82exit 83_Exit 84abort 85atexit 86system 87getenv 88setenv 89unsetenv 90putenv 91time 92clock 93times 94difftime 95mktime 96localtime 97gmtime 98asctime 99ctime 100strftime

Chapter 61

atoi

2025.05.23に更新